I just lost it

Ma

A 5 who's almost 6 year old boy running around naked and he told his little sister who is almost 3 on the 18th of this month to take her pants off then the older brother who is 8 went and tell the daddy but the daddy just didn't say anything to the 5 year old . What to you do or what do you say. I lost it to my husband because I felt he should of go and have a talk to the 5 year il. Am I wrong for getting upset? I know they are little kids but I feel so enraged at my husband not sure if its my hormones or the fact that when I was a child my oldest cousin used to touch me places. Please tell me what I should do. I have no one else to talk to about this.