She (20F) doesn't like ice cream

I've (23M) been dating this girl for almost a month now. We saw a movie together and when we got out it was a perfect summer night. I immediately knew that a little night scream would absolutely hit the spot.

I said to my girlfriend, who I'll call Moose Tracks, that I knew a couple of super cute local ice cream shops if she was down because some cake batter would totally fuck and she goes no, I actually don't really like ice cream.

So obviously I'm like what the fuck. Nobody dislikes ice cream, even veganism allows exceptions for ice cream, so you can see why this is concerning.

I don't mean to be dramatic here but I feel like it's a massive red flag. And I know a lot of you will probably comment how, yeah, if it's been almost a month and the topic of ice cream hasn't come up yet then she's probably not the one but she crushes pizza so I guess I thought she wasn't crazy.

When Moose Tracks saw the look of disgust on my face she tried to redeem herself by claiming she's lactose intolerant but if that's the case she can just take lactating pills or at the very least eat sherbert and I said as much.

Should I just dump her when I see her next week. I really just don't need that kind of energy in my life right now. She's always joking about hot girl summer but hot girls eat ice cream.

The only other option is she gives me a summer hall pass strictly for ice cream dates but she's highly unlikely to agree to that even if I promise that we won't share flavors. She's deeply insecure.

How do I rid myself of this monster?

tl;dr girlfriend doesn't like ice cream and I no longer like her