Hi and sorry about what happened to your daughter.
Your worries are real and genuine.
Where do you live? is lyme disease
Not all tick bites lead to transmission of lyme's disease. If is it that rampant in your area, then you may want to treat fully and clear yourself of any doubts.
If it is common and given the fact that it is in an area where the typical rash
may not be easily visible, I may suggest that you just get the treatment as it is very less expensive with minimal side effects.
I hope you find this answer helpful
Feel free to come back to us witth many more answers.
I wish you and your daughter good health.
Dr. Ditah, MD.