So this is one of many things that happened. TW SUICIDE SEXUAL ASSAULT SELF HARM

I have multiple personalities and in December I had ran away and was staying with a friend. One day my friends dad was upset and yelling and that triggered a switch for my personality who is overly sexual and self harms to come out and that evening they tried to kill themselves and did things that harmed the body and my friend also partner at the time was holding my body down to stop them from killing them self and in I guess retaliation they started assaulting my partner with kissing and groping. I dont remember the event directly i get disassociative amnesia but I have flashbacks where I relive the moment and my ex told me a little to. Is it my fault? I feel really guilty about it even though I know I couldnt have stopped it it wasnt me just my body.