[lil fu fu girl]

Sorry to hear about Lola.
I am going through the same thing with my
little girl, Andromeda. Been inside all winter and low and behold, she tested positive for Lymes 2 weeks ago. They have her on Doxycycline as well.
As with any antibiotic, there are several side effects to look for.
The antibiotic kills the bad bacteria, but alas, also the good. So
her stomach may start acting up, and she may not eat. Also, she may have diarrhea or loose stools due to the destruction of her intestional flora by the antibiotic.
The best way to stop that is to feed her an organic plain yogurt. There are also pro-biotic pills that you can give, but yogurt is just so much easier! You want to promote the growth of the natural biotics that are in her system already. Try to give her the Doxycycline with her meal, and not on an empty stomach. Feed her several small meals a day. That way her stomach is never on empty.
So far, this is working for my Andromeda.
She is eating healthy and has no side effects.
Just for your peace of mind, this is the same drug that they put humans on who have developed the disease.
Keep me posted as to how she is doing!
Best of luck.