I understand why you are concerned. Please know that even if this turns into MS, life can be excellent. Most people seem to believe that MS "is a wheelchair disease." That is not so for most of us.
I had my first hospitalization at 21 and am now 61 and still walking. This week I walked to my Physical Therapy appointment because I missed the bus. Your daughter will not be exactly like me but she won't be exactly like the worse things you have read and are worried about either.
Here is the most reliable info that I found for you:
About 1 in 5 patients with a first episode of optic neuritis will develop myelin sheath inflammation elseswhere in the body, or will develop multiple sclerosis.
It makes perfect sense that she was fatigued and slept. One of the major symptoms of demyelinating disease is overwhelming fatigue. Sleep is not necessarily reviving, however.
Regarding the steroids (both prednisone and IVSolumedrol (IVSM) are steroids, the standard treatment seems to be w 3 or so days of IVSM w or w/o an oral taper of prednisone. Here is a statement from the Mayo Clinic:
Intravenous steroids. You'll likely receive steroid therapy by vein (intravenously) for a few days. Intravenous steroid therapy may accelerate vision recovery, but it doesn't appear to affect the ultimate extent to which you'll recover vision you may have lost.
Oral steroids. After intravenous steroid therapy, your doctor may prescribe an oral steroid called prednisone for about two weeks.
I hope this helps you.
Hi Erin- Crosspost