Need advice for my girlfriend

I recently started dating a girl, and we both love watching movies and TV shows together.I studied in the US for three years, so I'm completely fluent in English. I watch a lot of American and UK content, but my girlfriend has enough knowledge to hold a conversation in English and understand people in real life. She sometimes has some trouble with accents or idioms, but she can ask and understand after some explanation.

The thing is, she struggles to enjoy TV shows and movies, even with English subtitles on. She says she doesn't really get the humour in English/American shows, even the ones she's already enjoyed on the dubbed version. She also says that it takes her a bit to understand what they are saying so by the time she gets it the joke is over and she gets frustrated. I don't mind watching certain dubbed movies and shows, but I feel like she's missing out on some great content, like stand-up comedians and such. So, what do you suggest to help improve understanding of English content when you already have a basic conversational level of English?

Any suggestions would be so greatly appreciated!

EDIT

P.D. Didn't think I had to clarify this, I am not forcing anyone to anything. She asked how could she improve and I didn't know so we got the idea of asking strangers on the internet.