Most people could tell it was Mocha, but I wanna warn you about her. She's lied about her age multiple times and said she was 18 on an alt of hers while asking you to draw R-rated stuff. She copies Mochi's designs, comments rude things then tries to act like she didn't, just overall a red flag. You can take this however you want and although you're not obligated to do anything I really do suggest keeping her off your account, she could make you look bad and not to mention all the creepy stuff. Please stay safe, we don't actually know this person's age and although they claim to be 12 ( even if they are, everything they've done is NOT ok ) we don't know and can't really take her word for it anymore.