Have you tried an exercise pen with her? You can get one fairly cheap on Amazon. Set that up for her on a floor she won't ruin, like vinyl and put a pee pad in there, so if she does go it isn't a big deal. Give her toys, food and water before you leave her. I would try that for a few weeks. I would put her crate right in the pen but leave it open with a dog bed in it or a comfy blanket.
If you have to rehome her I hope you find a good home where someone will be home with her more. I just got a 9 year old Yorkie a few months ago from a family that was never home and boy is this guy happy! He is now with a stay at home mommy who adores him and is almost always home. He goes most places with me if I am running around picking up kids/dropping them off. I have teenagers though so they are much older and less needy than younger kids are.
Personally though I would try to keep her and just try keeping her in a different type of scenario like with the exercise pen, or baby gating her into the kitchen and see if she is happier. People do have to work and these dogs are adaptable. I felt bad for my little guy because even in the evenings there was never anyone home at his old house, they were just always gone. Being home in the evenings with her and on weekends should be good.
She got used to you being home and her being out of the crate because you were home so much and is just letting you know she is not happy about you going back to work.
Good luck! I hope everything works out with her.
__________________  It's raining Yorkies here! LOL Teek  ,Rowan  , Raksha (Grand Puppy)  , Raelyn |