<human>: Ok this is a very odd predicament I am in. My dad is in legal trouble and is in fear of not being able to have contract with anyone under the age of 18. I am his only daughter and the mother of his only grandkids. 

My father and I don't have a very good history. He has issues with looking to look at underage girls. When I say this I mean like 11-12 year old girls. I found this out when I was in that age range and just snooping around on the computer and found pictures I will never forget. I told this information to the sheriff when the investigation on my dad first started. 

My dad has always had issues with how I live my life Anne always has to butt in. He lets my kids do whatever they want when they are at his house and doesn't give them any structure. Whenever they come back from spending a day over there they are crabby and say how they don't want to be here. I don't feel it is a good environment over at his house for them. I honestly would be happier in my life if I didn't send the kids over to see him or even have contact with him.

Well, about the letter part. My dad's lawyer wants my dad to have people who know him well to write letters to help keep him out of jail. He already has about four letters from other people but wants my letter to say how much the kids would miss him and how he should still be granted access to see the kids. I honestly don't want to write the letter. How do I tell him I don't want to write the letter without him blowing up or crying?

Can you succinctly summarize the text in 1-3 sentences?
<bot>: dad having rights to see his grandkids taken away, wants me to write a letter to the courts for him, really don't want to. How do I tell him?