The movie star withdrew from Season 31 of Dancing with the Stars due to the damaging physical stress on her body as a sufferer of multiple sclerosis during Monday night's performance show, which featured 12 couples dancing and sharing stories about their "Most Memorable Year" on Disney+.
"I didn't want to leave," Selma, who previously starred in Cruel Intentions and Legally Blonde, toldUs Weekly following Monday night's show.
Selma, 50, said a doctor's visit on Thursday, October 13 was when she "knew" she must leave the show for the sake of her health.
"I had an MRI on my knee, and the doctor was like, 'Ugh, if you can choreograph it in the pool or do something, you know, not weight-bearing,'" Selma revealed.
Selma said a doctor continued to monitor her symptoms and she never really improved.
"I was like, 'Oh, but maybe I feel better. Let me check stuff, and then if that's okay, then I'll continue,'" Selma recalled.
"But it wasn't great, but nothing horrible. But I was like, 'Oh, okay. I'm not prepared for horrible,' but leaving was horrible enough. I felt last week would be our last dance, but then I was like, 'No, no way.'"
Selma expressed how "sometimes you just have to take care of yourself."
But Selma said she had "gains" from dancing on the show that she wouldn't have been able to achieve in physical therapy or with regular exercise.
"I had a bone overload, but on the other side, I had total gains," Selma said, adding, "I can calm down better now when confronted with a new task."
On Dancing with the Stars, Selma explained how she had pushed herself too far considering she battles a chronic illness.
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"It's way too much for the safety of my bones. There is intensive bone trauma and inflammation, among rips and tears. So I could do extensive damage that, of course, I do not want... I have to settle in and get back to being a mom," Selma explained.
Before leaving the show, Selma and her professional partner Sasha Farber performed one final dance, a waltz to Andra Day's cover of "What the World Needs Now Is Love."
Selma and Sasha paid tribute to Selma's most memorable year, 2018, when she was diagnosed with multiple sclerosis and finally had the answers she needed.
"This competition is hard for everyone, but if the others have climbed hills, you have climbed mountains," Len told Selma.
Bruno said Selma has never shone brighter, and Derek said she was a "beacon of light" to everyone else in the competition, even to the staff who work behind the scenes.
Derek told Us after the show how Dancing with the Stars is already planning how to include Selma in the Season 31 finale.
"She was the story of Dancing with the Stars Season 31," Derek noted. "I think this is the right choice without a doubt, and I have no doubt that we haven't seen the last of her."
Derek said he already told Selma that they'll be doing something finale night.
"We're doing something in the finale. Don't care. We're gonna do something cool. I already got some choreography playing on the table and we're gonna do some fun stuff.' I was already pitching her ideas!" Derek boasted.