Hi Jennie, sorry to hear about your 6yo. I have an almost 5 yo and I would feel the same way you are if he was bitten with those symptoms!!
I would highly suggest finding a pediatric lyme doctor. Take her to your LLMD if you have one and can't find a ped's doc. If she's still having symptoms, then she obviously is still infected with something.
Do you know if the tick was tested for bartonella also? Or is that not common in the Lone Star tick?
I've been having BioSet (a type of electrol dermal testing) testing and treatments done for my Lyme. It is completely non-invasive. I'm in California and have it done at Immune Matrix in Milpitis, (San Jose area). Scott the "betterhealthguy.com" might be able to help you find another place near you that does that treatment.
My prayers go out to you and your family,
11/07 symptoms start
7/4/08 IGenX LD positive,gluten sensitivity,low magn, low WBC's,+yeast/bacteria/tapeworm/roundworm, EBV,HHV,CMV,Parvo,
7/25/08 started on Biaxin
9/08 IGenX co-infections neg, but probable Bart, Bab, Erhl
11/08 Biaxin,Plaquenil,Cipro, Artemisinin,3 probiotics,Transfer Immune, Bcomplex,MultiVit,omega3,magnesium,
1/29/09 Added: Rifampin 600mg- Ehrl, Lomatium 15dropsBID-parvo, andrographis 15dropsBID (super yuck!)-LD, Alinia-cryptosporidium.