Molested

Ok so a year ago I found out my son was touched by my husband now 12 year old child. Till this day it irks my soul I just can't get over it . She had lived with us for about two months. I'd say she prob did it several times. About two months later she moved out. She hasn't been here in over a year. She's coming to visit in about a week and I'm just not comfortable. I understand and respect my husband needs to see her. Am I wrong for feeling this way ?

Update: the child is my husbands daughter. I found out because he started crying because she scratched his private parts. I didn't call the cops because I really didn't know how to handle

the situation. I wanted to smacked her but obviously I couldn't do that. I definitely talked to her and her dad about the situation. She moved back to her moms. This is the first time in a year that she will be back for two weeks. As for my son I didn't take him to counseling and he no longer brings the situation up at all. I haven't forgotten what happens but it really bothers me. She is now 12. Also my son speaks to me about everythining.

Update :

Her father is upset thinks I have something against her.. told me she comes first before me. I'm packing my shit to me his applauding her. He didn't even have the compasión to how I feel about her coming !!!! Instead saying that I can stay at my moms .