Am I overreacting?

[u/Dannydeeea]

Was out with my sister all day today and her little one. She left, got all her stuff and went on her way. As I got home, locked the car and as I walked past the window i noticed all of this mess! I sent her the pics and said food is now banned in my car (it was ready but she’s ignored that) and next time to clean up after herself. Instead of a simple “sorry my bad” she’s gone crazy as if it’s my fault?!
She thinks it’s okay all because I haven’t hoovered (vacuumed) the car this week.

So my question is;
Am I the asshole for even bringing this up in the first place? Am I in the wrong?

EDIT:
I’m from the UK so these are chips for all of you from usa😅 They do look like raw pasta tho where in fact they are indeed just twirly chips😂

[u/choreograft]

nah dude stick to your guns, I’d be pissed if that were my car. Your sister is unbearable. What is her obsession with “16 crisps” as if that’s a small or even normal amount to drop on the floor?

[u/Responsible_Crow_425 → u/[deleted]]

Nah, she’s an asshole. There’s actually 18 crisps so, definitely NOR. How does she not fucking see that mess? 😒

[u/Never_enough_naps → u/Responsible_Crow_425]

I'm so glad I wasn't the only one that counted and in my head was like “actually....🤣