Hi and welcome. The downside to counselling is it can get worse before it gets better but it can help you deal with things. You may be better, as Suzi suggested, looking into specialist counselling as they have specialist training. You deserve help.

Oh and my partner still struggles with the effects of the emotional, verbal and mental abuse his ex-wife subjected him to. When he's struggling, we just tell his 6 year old daughter that daddy's head is a bit poorly and lots of hugs would help. She accepts that. They're very accepting and surprisingly understanding at that age.