Tryna keep my word to my child but getting pressure

I posted a few months ago about my daughter (age 15) telling me about a boy touching her without her consent. When she told me, she asked me not to tell her dad because she’s afraid what he would do and she didn’t want to hurt him. I understood her feeling because my ex husband is an alcoholic with a bad temper and depression. My thought was that after being in therapy, she’d get to a point where she would tell him. Anyway she’s been in therapy weekly for the past 2 months. Her dad pays for her insurance so he gets the statements and knows she’s in therapy/counseling. He has asked me about it and I told him she’s dealing with some issues (her actual diagnosis is anxiety caused by life adjustments ....not the exact wording of course but you get the idea) and she will discuss them with him when she’s ready. He asks me what happened. I told him she asked me not to share that with anyone. So he’s mad and pissed off at me, which honestly isn’t anything unusual. He’s mad at me about everything. It rains outside, he’s mad at me so I’m used to it.

Anyway, a few weeks ago he tells me that he’s gonna start picking her up from school Mondays and Tuesdays. I’m like cool. So the first time he picks her up, he’s questioning her about it. She won’t tell him so he blows tf up on her. She gets home visibly upset. She said he was guilting her into telling him what happened; telling her that she only calls or texts him when she wants something and she doesn’t share things with him. He then calls me to say that our daughter is manipulating both of us because she tells him things about me and tells him not to tell me. He says she’s playing us against each other. Well this is the first time he’s ever mentioned that she vents to him about me but I’m not surprised or bothered. I told him I was glad she had him to vent to about me but that wasn’t gonna make me go back on my word. So I felt like he was manipulating me into telling him. He really blew up about it cussing me out.

I told him to participate in her counseling sessions and he’d know more about what’s going on in her life but he refuses. If he participated, she will get to the point where she’s comfortable telling him things. It honestly seems like he’s just mad about a “secret” being kept from him than he is about his own child’s state of mind and well-being.

I know this was long but I appreciate you reading it. I just don’t think me telling him would solve anything or make anything better for my daughter. I also don’t understand why he wouldn’t talk to her counselor or participate in counseling if he’s a concerned father. Last week the counselor said she was going to reach out to him and we gave her his phone number. He didn’t answer her call or call her back.