"Luann's great," Frankel told host Andy Cohen. "Luann is the most resilient, strong woman I've ever met, maybe. You know, she hit the wall going 90. The way you handle something when something bad happens is really character building and it shows a lot about a person."
"She's taking care of herself. She's taking it seriously. She's not delusional about where she is," she added.
"She's sort of on a path and she's in a good place. She's very honest about exactly where she is and what happened and about what her goals are."
E! News previously reported De Lesseps completed a 21-day program in January.
The 52-year-old reality star had checked into rehab in December after she was arrested and charged with disorderly intoxication and battery on a police officer.
"She sounds amazing. Very clear-headed," a source said of de Lesseps' recovery. "She's in a good space right now."
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