Daughter just diagnosed with Lyme disease 5 years after bite. Has had numerous symptoms. Wondering what treatment should be.?

Physician eval. Likely would require course of antibiotics but best have an evaluation by a physician with experience in cases like this.
Have her see. Her physician for evaluation first, the treatment usually is antibiotic.
Efficacy. Antibiotics are not likely to be necessary or effective in treating an infection which occurred five yrs ago. No testing has shown persistence of the the organism for that time period, although other spiral bacilli may do that (syphilis). The basic question is whether the symptoms your daughter has are truly related to the prior lyme infection? See a doctor with experience in this illness.
IV antibiotics. She should have a spinal tap and neurologic evaluation, . Should be verified by western blot and be referred to infectious disease specialist.