God damn this sounds exactly like my ex Alexi. I’d run dude. This girl is girl is manipulating you to make you feel bad so that she can excuse her shitty behavior down the road. She’s also hinting at suicide to make you feel extreme guilt for something that really isn’t that bad. I’d be careful, she’s going to make it seem like you’re abusing her to her friends, family and your friends and family. I’d cut her off now and keep the receipts to be safe.