GF's mom ruined my 20th birthday, just like she did my 19th... now l'm thinking it might be time to break up. M20 F20 any tips?

So, I just turned 20 last week. My girlfriend (who?s also 20, she had her birthday a month before me) and I have been together since senior year of high school. Her parents were pretty strict back then, but over time, her dad figured out I wasn?t a bad guy, so he stopped caring what time she came home. However, her mom never got over her issues with me.
Fast forward to my birthday this year. I had plans to celebrate with my girlfriend after my morning classes. I drove an hour from campus to her parents? place (she still lives with them), and when I got there, everything seemed fine. She wished me a happy birthday, and her dad told her she could come back whenever, and that he?d let her mom know.
We went out for lunch about 30 minutes away and grabbed a free drink to celebrate. Then, out of nowhere, her mom calls and starts losing it on the phone. After she hangs up, I ask, ?Is everything good?? My girlfriend looks at me and says, ?My mom says I gotta go home, like right now.?
At this point, I?m just trying to stay calm, but inside, I?m frustrated. I drive her back, even though her mom keeps calling, telling her that I need to hurry up. She knew it was my birthday but still decided to pull this. I drop my girlfriend off, and by the time I get back to my parents? place, it?s already after 8 PM.
When I tell my family what happened, my mom gets super upset, and my dad?s obviously not happy either, but he keeps his cool. We tried to brush it off and still had a little celebration with my family, but it was hard not to feel like my birthday was ruined?again. The same thing happened last year when I turned 19.
Since then, it?s been almost impossible to get in touch with my girlfriend. She barely answers my calls or texts. I?m honestly starting to wonder if it?s even worth it anymore.
tdlr: birthday got messed up bc her mom wanted her home and didnt care for my birthday shes been treating me this way for awhile (relationship has been going on for 2 years btw)


Source.

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