What kind of muppet is this?

Found her a few weeks ago and she’s apart of my family now (no chip, no one claimed her, she was found with muzzle marks wearing a diaper and a heavy chain anyway so whoever had her probably didn’t want her). Her tail curls up whenever she is excited or curious, and flattens when she is calm and resting. I have a few ideas but was curious as to any guesses.

She has the most insane side eye, very friendly, super sweet, learns very quick. Absolutely no training or boundaries, and she’s only puppy pad trained and refuses to go potty outside. I’m hoping to fix that but we will see.