Hunt the piss out of her, I've had several here recently go thru it. It will last a week or two, then dry back up.

My best bitch went through a false pregnancy and got all emotional with me this past winter. She started a good boar one night and dropped out of the race after a couple of hours. Right when things were heating up at that! I tried to put her back in and she would just bark at me in a whining way like she had lost her dang mind.

This is a dog that has started and finished 4 and 5 hour races by herself. She went completely retarded on me but I just kept hunting the piss out of her. It was frustrating and I was starting to wonder if she would ever get out of it. After about 5-6 weeks she straightened out and was back to normal.
Just keep hunting her. Even after the physical signs are gone, the hormones and the emotional stuff will still be out of whack for a little while.