Since you "pay" for therapy it is 100% up to you when your daughter's therapy ends but I think the therapist was only pointing out how helpful the therapy is being to your daughter and getting her input as to when to end might be a good idea for your daughter's sake. Were it my daughter I'd talk to her about therapy (the therapist cannot talk to you about your daughter, that is the nature of therapy, the confidentiality of what your daughter says to her) and give her a time range, mid-December to mid-February, say, and have her pick her date from there and inform you and the therapist.