Regression in training in 2 year old cavi x

Hey everyone! I have a lovely cavi cross who has just turned two. From the day we got her, she was well behaved - picked up simple commands (sit, down, shake with both paws and roll over by the time we took her to puppy school - proud mumma right here!) crate trained herself, and is happy to spend time in there, also toilet trained herself. However in the last couple of months. It has been almost impossible for us to get her to listen to us. She barks incessantly, day or night. She's peeing and pooping inside. Steals our cups off our side tables (spilling the liquid everywhere). Jumps on people when they walk in the door. It seems like she has lost all memory of what to do. And randomly every now and then she will be on the bed, getting comfy for the night (pushing blankets around etc) then just pee. Any advice?