So while these may have been put up for discussion before, I apparently didn't see them. Sooooooooo:
1 Serana cured herself, can she become re-infected in a fight with other vampires?
2 I didn't return to the soul cairn to let Serana's mother know she could return. I, also, didn't cash out my soul gem , so I should be fine to return. On the other hand, will Serana be able to return now that she is no longer a vampire?
I suppose I should know these things, but this was the first character that got her to change.