Is her return for a short arc or will it be longer? If it is a short arc, I'm fine with that, but otherwise, I agree with Heather about what her purpose on the show will be. We already have a lot of women in this age range on the show and a lot of them like Jennifer don't have enough story as it is.
The show really needs women in the 30s to early 40s age range. As I have said before, once Nicole leaves, we will only have Chloe onscreen with Belle returning short term, and it doesn't look like they have any plans for Chloe based on the Fall Preview. Unless Billie is reintroducing Chelsea onscreen, I don't really see the purpose of her character at this time.