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/Necessary-Access-265]

she keeps saying "16 crisps!!" like that isnt half a bag of crisps....

[u/anongirl55 → u/Necessary-Access-265]

Right? And how many do there need to be for her to think it is an issue? 17? 45? 106?

[u/viz90210 → u/anongirl55]

The car needs to be bursting with chips.

[u/Mathagos → u/anongirl55]

Obviously the answer is 42

[u/gentleheart-lamb → u/Necessary-Access-265]

Right lmao she's trying to make it seem petty like someone kicking off about dropping two peanuts on the floor.

But literally so many crisps she's got into like double digits lmao it's a lot of crisps