Usually. There’s two exceptions that I’d acknowledge. One is where abuse simply was not present, which does happen sometimes due to divorce, which young children can’t always understand.
The second was when abuse was minor and something the offender might be able to overcome after themselves undergoing treatment, and there are no other family that could take the child. If there is a shortage of foster parents as there often is, it can be preferable to try to reunify over just sending the child to grow up in a shelter.
Note, I’m talking about the therapy more broadly, not this specific case.