It is hard when a parent doesn't approve of a girlfriend/spouse. My mother was very critical of my boyfriend, but he asked for my hand, and he was given permission. She is a bit more civil toward him after 24 years.

Of course, asking for a daughter's hand is a quaint behavior, but it is a nice thing to do. But if you expect things not to go well, then you can forgo this action.

I assume both you and your girlfriend are 21 or over. (I don't think marriages made too young are wise.) If so, then you don't have to have any approval. My mom and my dad even eloped!

The thing is, my therapist told me my mother would not approve of anyone I married! It's sad when parents are that way.

I agree it's a tough time for your gf's mom. However, when the time is right, then you can chose to marry. If your gf decides not to marry
you because of her parent's disapproval, then consider it for the best. It would be her choice.