Elizabeth, whom Clayton eliminated during the third Rose Ceremony of the season after her feud with Shanae Ankney, made the allegations as part of a post-exit statement she posted Tuesday afternoon on Instagram.
"I began this season with a simple photo of my great grandparents and one question in my heart. What serendipity had brought me to meet this man? I now have my answer," Elizabeth began in her post, which served as the caption to a slideshow of Elizabeth modeling a red dress surrounded by red roses.
"Though I did not find love with @claytonechard and am left still searching for my final rose I did find love in all of you, especially in the neuro-divergent community who has surrounded me in a blanket of their love and support."
Elizabeth, who was diagnosed with ADHD in the first grade, went on to allege, "The sleepless nights spent staring at the ceiling in the mansion, the tormenting, the attacks, the bullying, the gaslighting, the physical abuse, the not being believed... have all been worth it."
"Because you know what?" the 32-year-old real estate advisor from Highlands Ranch, CO, continued.
"Your stories have brought me to tears and changed my life, your vulnerability and finally... allowing me to be seen. Thank you. Thank you for seeing me."
Elizabeth recalled how growing up with ADHD and "sensory processing issues" resulted in her being taken from class "twice a day to take my medicine."
"I had to leave school early to go to occupational therapy -- kids would 'oooooo' every time I left to do so," Elizabeth shared in her post.
"Living as an adult with severe anxiety has been something else entirely. I felt different, I felt strange, I felt... not good enough. But you know what, I am. You are. Being different doesn't make you lesser, it makes you strong because you have to overcome."
Elizabeth proceeded to give advice as a woman and as a friend to her followers.
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"Believe in yourself, believe in your intuition -- it is strong, it is powerful and it KNOWS," she insisted.
"Listen to those around you who love and support you, and drown out the voices of those that do not, they are facing their own battles."
Elizabeth concluded, "Know that at the end of the day no matter who or what you are facing, YOU get to decide how to react YOU get to decide in that moment who you will be. Choose integrity. Choose respect. Choose yourself. All my love, Elizabeth."
Elizabeth uploaded her slideshow not long after Clayton publicly apologized to Elizabeth on both Instagram and Twitter on Tuesday for denying her a rose after drama with Shanae.
After apparently receiving backlash from Bachelor Nation for eliminating Elizabeth and keeping Shanae on his season, Clayton wrote, "I'm sorry, Elizabeth, for what you're going through. I wish I could have seen what was happening when I wasn't there."
"I obviously knew y'all weren't in a good place with each other, but I thought at the time that it was, solely, petty drama," Clayton explained. "I would have sent Shanae home immediately for making fun of you for being neurodivergent, had I known."
Clayton also said watching Season 26 back "hasn't been fun" because he's seeing "the damage" he caused and "the repercussions" from his decisions.
Clayton promised he's learning from his mistakes and wants to come out of this experience a better man, and he reminded everyone that "mental health matters," including his own.
While fans watched all the drama between Shanae and Elizabeth go down on Monday night's The Bachelor episode, Clayton tweeted, "I'm looking forward to having an open and honest discussion at [The Women Tell All] with what all happened."
"It's important to hold people accountable, including myself. #TheBachelor," he added.
Elizabeth replied to Clayton's tweet, "I'm ready."
Elizabeth was also pretty vocal during Monday night's The Bachelor episode.
"Shanae seems to like my shrimp so much... wait til she tries my tea," Elizabeth tweeted.
Elizabeth also retweeted two fiery comments. One person wrote how attacking people with "neurodevelopmental disorders" is not funny and this storyline should end before Season 8 of Bachelor in Paradise.
And another Twitter user commented how Clayton's choice to let Elizabeth go was "one of the worst moves in bachelor history," before writing, "JUSTICE FOR ELIZABETH!!!!!"
Meanwhile, Shanae has not issued a public apology or shown any indication of remorse. Instead, she posted lighthearted video clips of shrimp and herself dancing in her "The Bachelor Bowl" jersey while watching Monday night's episode.
Shanae and Elizabeth's feud ran through multiple episodes of The Bachelor's 26th season.
It all began when Shanae accused Elizabeth of being "fake" and "two-faced" because Elizabeth had allegedly acted like her friend one minute only to ignore her the next.
Shanae told Clayton that she noticed a big "red flag" with Elizabeth, who then apologized to Shanae for making her feel left out. Elizabeth explained she may not have heard Shanae talking to her in a group setting because she struggles with ADHD and processing multiple auditory inputs at once.
Tension mounted when Shanae claimed she had cooked shrimp for the girls and no one wanted any. Shanae believed Elizabeth -- who allegedly did not acknowledge Shanae's presence while she was sitting in a hot tub -- had turned everyone against her.
Although Elizabeth attempted to bury the hatchet with Shanae multiple times and respectfully move on from the drama, Shanae proceeded to tell Clayton that Elizabeth was a "bully" and "a liar" and that she had created a toxic environment.
After Clayton confronted both women and watched them bicker over shrimp, he decided to give Shanae a rose at the third Rose Ceremony of the season and eliminate Elizabeth, who had spent most of her time with Clayton defending herself.
Elizabeth said during a Monday appearance on "Click Bait with Bachelor Nation" that Shanae began targeting her during a group date hosted by ZIWE, when Elizabeth was able to sit next to Clayton for a game of truths.