Setting up Trust for unhappily Married Daughter

My husband and I have recently come into some money, and we’d like to set up a trust for our daughters to let them pay off some of their debt. However, one of our daughters is unhappily married, and I think once this is set up, she’s not going to want to stay married. In fact, I’ve already shared this information with her and she confirmed with me that she probably wouldn’t stay with him after this.

I don’t want the money in this trust to be considered one of their marital assets and split 50-50 if they do get divorced. How do we set up this trust so that she has full control of it and he can’t touch it if they get divorced? Or should we just wait and set it up after they’re divorced?