I would ask. From the way you wrote about it, it sounds like you would phrase the request sensitively. They may turn you down, they may not. Sometimes people get strangely material about these things. One of my aunts rented a storage unit to store my grandmother's stuff. As far as I know, she still rents it and it's been 15+ years.

Just curious -- whose behavior was toxic, your father's? Would you want a relationship with this part of your family? My father's side of the family doesn't like my father, but I've found that it is possible to have my own relationships with them that don't involve him.