The first counsellor I tried thought I should join her group therapy. I explained that cults were very different from most traumatic experiences. She was rather indignant that I thought I had had a totally different experience emotionally to someone who had been through a divorce or had a miscarriage. I gave up trying to explain it to her.
My second counsellor knew about JWs because her relatives were involved with it. She said when she took her kids to their grandparent's house they were not allowed to play with their cousins whose parents were JWs. Her kids were viewed as a bad influence so had to play in another room.
As usual people don't understand this cult unless they've had first-hand experience of it. I strongly suggest you try another counsellor.