Hi.. I rescued a min pin mix (possibly mixed with chihuahua) several months ago from a local shelter.. She REFUSES to be house trained.She goes outside but then comes right back in and goes potty on the floor, the rugs OR her puppy pad.. wherever she feels like it.. If I put her in a crate I come home to a bloody dog where she has rammed her head on the crate and bit and chewed til her gums are bleeding. and she screams at the top of her lungs the entire time she is in the crate. she is also a chewer. She has chewed the arm on my leather chair to bits AND another piece of leather furniture... The bitter spray does NOT phase her at all.. She is spayed and is maybe a year old. Any advice?