Hi there! I'm not sure if you know this, but I think i've seen a lot of people steal this design and sell it as merch and stickers. I originally saw this art from a reddit post in the animal crossing reddit where someone showed this design as a sticker they got from Wish. Knowing Wish, i figured the design was stolen and tried tracking down the artist. I found a LOT of merch with this design on it, none of it seemed to link to here, which is why i think its stolen.
Also, might be worth knowing that when you search "isabelle i will destroy your bloodline" you find a shitty tweet where someone posted this picture but edited to say something about supporting MAPs (pedophiles)
I just wanted to let you know about this in case the merch was stolen and not something you did!
Sorry for the late response, I don't check deviantart that often ;;
Thank you so much for letting me know! unfortunately I've seen it all happen with this drawing, I've addressed it on my twitter as best as I can but it's almost impossible to prevent from being stolen for products on wish and other sites