Please note this will contain Wizard101 Arc 2 spoilers. If you are OK with that, then read on.
As we all know, Morganthe was defeated by us with the help of Old Cob. But, all we saw was her fall into space? It really wasn't a CONFIRMED death such as Malistaire (We watched him walk into the light with Sylvia), which confirmed he's gone.
What do you think will happen regarding Morganthe? I'm hoping to see her come back before the end of the 3rd arc. Maybe helping Old Cob perhaps? In the final battle with him? That'd be interesting! Or maybe she could come back and (wild idea) corrupt Merle Ambrose and we have to fight him, and he could be like Myth and Life school? (Duo school)
Re: What more could happen with Morganthe? (SPOILERS)
Well she is a giant spider with webs, and should be able to spider-man her way back to the spiral and make a comeback and maybe help you beat the cob again, so i kinda expect to see her again in the story later on.