Having Noticed Problem With Vision Due To Bells Palsy

My daughter has come down with bells palsy for the third time. Her vision has been affected with this. she has been on a very strong antibiotic to which she is no better. she was tested for lyme disease and the first test was positive the second was neg. and the third was inconclusive. She has no energy. She had a mri and more blood work which the dr. said showed nothing. He told her that the way her side of the face is will probally stay that way. She told me something is wrong. She says that you do not feel and look the way she does for nothing. Should she see a infectious disease dr. or what should she do. Please advise us, we know something is wrong but nothing is showing up.