Sue, that's really awful. I can semi-relate--we recently found out my mom has had epilepsy and frequent small seizures for several years now. I haven't really had to deal with any of her really bad spells--she had a grand mal last spring--but my dad has. My dad was a lifeguard on the beaches of Miami for seven years and knows his lifesaving skills--but when my mom had her grand mal he said it was the most helpless he'd ever felt. But watching my mom go through this kind of stuff day in and day out--it's so hard.
I wish you the best of luck, I hope it's nothing serious, and I hope your mother feels better soon.