I would definately have them check for LS.... When we first were having problems with Copper he kept hiding under my bed, and his mouth was soaked he hadn't thrown up but was salivating. I am sure you already know this but please make sure she is eating, and keep that nutrical on hand.
If I am not mistaken I have heard that they can do the BA test with out fasting. I know I read that somewhere, I think that it is a urine Bile acid test, because she is so small and could also be anemic from the fleas I would not fast her unless you have to. bless you for taking care of this sweet baby.
__________________ My  belongs to Copper and Maddie Mae RIP Sweet Rocky Mommy misses you |