relationship advice

[Wonkie]

Hi, been a lurker in this section and didn't really have the courage to post, but I'm at my wits end with my girlfriend (let's call her Chris) and her immature behavior.

Some background: So I first met Chris in a group of friends. She was fun, tomboyish, smart, and well-versed on the internet which I found particularly striking. She spends a lot of time on reddit, 4chan, and knowyourmeme. At first I found this hobby mutual as I'm a frequent internet user myself, except I started noticing that Chris would bring it into the real world.

For example, Chris has an obsession with memes. She has memes posted all over her wall and is very active on meme based forums. I understand they make her laugh and that it's not too concerning, but she brings up memes ALL the time. And I mean all the time. Even when we first started talking and flirting she'd bring up socially awkward penguin. At first it was cute, but then it got annoying fast when I realized she did this constantly.

My girlfriend doesn't abstain from meme usage, even when we're having sex. Whenever we spend this time together, she starts moaning doge memes like "such sex, wow" and it really kills the moment for me. Like really? Is that even close to appropriate? Maybe she wants to relieve the tension, but does she know when to draw the line? Even reading that over made me sick knowing that Chris is usually 100% serious about those things.

I tried bringing up her inappropriate usage of memes after my father died and she literally sends me advice animal memes that say 'don't be sad' but my dad just fucking died could you be more sensitive and not send me memes? I said that straight to her face yesterday and she started crying, and I feel awful but it was just really irritating for me.

Basically, every time I bring up her habit, guess what- she just brings up memes! It's impossible to fight with her reasonably and I'd hate to end our year long relationship over something so trivial like this and I need advice. Do I stick with her or not? The reaction to my dad's death was the final straw for me and I've been ignoring her messages, texts, which yes, do contain memes.

tl;dr: Girlfriend uses memes in real life, acts immature about them, and doesn't understand context... I'm really at my wit's end and need advice on if I should break or try to work this out. Please help.