Mother in law married a child sex offender

I'll start out by saying I live in Kentucky and my mother-in-law lives in Texas.

About 10 years ago, she divorced my father-in-law and married a man who is a registered child sex offender. She knew that he was a child sex offender when she married him. I looked up his record, he has three charges of indecent contact with a minor, he served 10 years in federal prison, and has to register as a sex offender for life. We heard through some people in the community where it happened that he had planted hidden video recorders in a home where a 12 year-old girl lived, specifically in her bedroom and in a bathroom.

My mother-in-law told my spouse's siblings, who also live in Texas, that everything is fine and there is no risk because her husband became a Christian and is no longer a pedophile. I want to say without hesitation that I don't buy that for a second. My husband and I have a daughter in the age range of the child he hurt. My spouse wants to take our child to Texas to visit his mother and siblings and to attend a family wedding, but I have huge reservations about this because of how my mother-in-law has successfully "normalized" and minimized her husband's crimes within the Texas group of in-laws. My sister-in-law has allowed her children around the sex offender since they were small, and someone in their community once called child protective services on her. It didn't stop her. She continued allowing her mother to care for her children and be around the sex offender husband often. Every red flag in my body is screaming, and I do not want my child around this person for a moment, I don't even want my child inside of my mother in law's home because of the nature of his crimes involving hidden cameras.

My husband has a lot of anxiety and conflict about this situation. He loves his mother and wants to please her and continue to have a relationship with her, but is also extremely protective of our daughter. He admits that his mother needs to understand there are consequences for her decisions, but doesn't seem to be in a place where he will stand up to her and verbalize that. I feel if I allow him to take our child there alone, there is a possibility that he will allow her to be around the child sex offender because he's trying to please his mother.

I am making plans to go along to Texas with them, rent an Airbnb, and insist that our daughter spend every night with me at the Airbnb. I know this is the right decision and am talking to my therapist about it. I am prepared to start flipping tables if I get a whiff of anyone in the family having a problem with this.

I'm wondering if anyone else has been in a similar situation with a child sex offender family member, what others thoughts are on it, how others may have reacted or enforced boundaries, etc. TIA