In November, it was revealed that Alesha's husband MC Harvey was having an affair with Girls Aloud reject Javine Hylton.
The pair were caught cheating by Javine's then boyfriend Karl 'K-Gee' Gordon, who then let Alesha know of what was going on.
But at the Dreamgirls premiere on Sunday night, her former bandmate Sabrina Washington said: "I saw Alesha on New Year's Eve, she's coping well".
"She's just trying to get back into normal, everyday life, she is a strong girl and I think she'll be fine, but obviously I can't speak for her."
She added: "I was friends with Harvey too, but haven't spoken to him since the situation happened."
Harvey and Javine - who used to be a friend of Alesha's - currently perform together on the West End stage in Daddy Cool.