Well Kitty I have experience of 3 friends or acquaintances who married men a lot older. Two of them had husbands who were very sparky and were trying to prove something, not quite sure what, but they were obnoxious.
My other friend who had come from an unhappy marriage is now at the age of 66 married to someone who is 47 for the last 10 years, they are idyllicly married. He nursed her through bowel cancer and proved to be her soulmate. Sorry your DD has had a bad experience.
Back to SCD I never know who half the contestants are either.