I am a little confused. How is your case related to this thread? And how come it's still pending?
In another thread you mentioned you filed a I-751 meaning you already have a conditional green card. According to you, I-751 petition was already denied, so you need to refile it with a lawyer and more evidence.
Yes, you can see a therapist still and use it in new I-751 petition. There's nothing to send to USCIS until you file a new petition.
Also, expect a question about this evidence, e.g. why you only saw therapist after I-751 denial.