To update my story, returning used items is risky - the merchant refused to take it back saying I damaged the item despite proof to the contrary (pictures taken same day it was received)... 🤦🏻♀️Thank you all for your feedback! I'm glad to hear that everyone agrees - I thought that perhaps I was making a big deal out of something small. I have requested a return.
So since I have some extra time to think about it, I took it to the H boutique where they said it's not that deep (to where I should fear it spreading) and they put a little paint on it to make it less noticeable.

Right now I'm just kind of annoyed about the whole situation, but maybe after my feelings settle down I might end up keeping it after all since it's a color that I don't have much in my collection and I wouldn't want a white bag any bigger than this (I was thinking maybe Roulis Mini, but I'm way too scared with swift or evercolor). And my MK SO is blue navy chevre, so a different vibe there as well, although I got the 105 cm strap to be able to crossbody it.
I'll try to make lemonade out of lemons here I suppose... 🍋