Therapists train to help people deal with emotional issues; rabbonim with religious issues.
Would you go to a therapist to paskin your kashrus shailah? So why go to a rav for an emotional issue?
If a rav also trains to help those with mental health issues, as Rabbi Twerski has, then all the better. If not, I’d choose a professional knowledgeable in the area of my struggle.
Also, having someone else stand up against those who harass you will only serve to dis-empower you.