How can I support a trauma victim?

I recently found out that my husband suffered from pretty severe sexual abuse from his ex... like full blown bdsm and blackmail...

I feel so terrible for what he has gone through and I know that it affects him everyday. We talk about it often and he tells me that he switches the dark thoughts off when he is home because his kids and I make him feel better... (he works alone and often will feel angry then will have a panic attack) we had been going to a counsellor for a few months but stopped when my daughter was born 2 months ago.

I just don’t know what I can do to help him... he feels so much shame and injustice...