I completed the quest at Winterhold college where another student asks to cast a spell on you. After the effects wore off and I spoke to her again, she cast another spell that made me invisible, but it doesn't seem to be wearing off. Anyone else encountered this and know how to fix it? Thanks!

Check your active effects. The spells she cast last for a long, long time.

That's what it was, thanks!

Wait, no, it seems that that wasn't it. I did see her spell in my active effects, but it's worn off and I'm still invisible. Anything I can do about this?