I don't think it was a "mini stroke" (TIA). especially the fact that the paralysis was on the same side makes me think of a different neurological problem.
as a priority she should do Complete Blood Count, ESR, liver function tests. in search of indirect signs of infections/inflammations.
the specific test to confirm that it wasn't brain ischemia is MRI to the brain but you should consult a Neurologist first.
I read of many people with mysterious neurological symptoms often associated with infections.
does she have bladder/urine symptoms?
Doesn't sound like any "mini stroke." I wouldn't consider this any paralysis either.
Any history of vascular issues, i.e. high blood pressure?
She should follow up with her physician; She should have some basic labs drawn and an assessment.