Stroke symptoms repeatedly come & then improve??

My 80 yr old mom had what was first dx as a stroke last week- confusion/ diff walking/ left side weakness& vision impairment. She has been on zaralto for AFib for several yrs and never any ‘stroke like’ issues. CT did not show bleed/ angiogram also clear/labs normal. The next day while inpt, strength & mobility returned & vision improved. So discharged w/ TIA DX. One week later- episodic return of all ‘stroke’ previous symptoms and then they resolve again. We are confused- discharging dr said TIA and now follow up dr says stoke. Has anyone experienced this ongoing random stroke symptom presentation w/ ‘recovery’ and then repeated episodes? What questions should we be asking??
Thank you.