I don't think things are all that desperate for her. Also, I think it's best that she's keeping her stage name. I mean, she has soap fans, too. Soap fans, in general, tend to be every bit as rabid as Joss Whedon fans, but also used to having more control than fans of other genres.
If worse comes to worse, she could always go back to soaps. I'm sure she still has fans there. It's not primetime or movies, but it is decent-paying (Ingo Rademacher, for example, owns a beach house in Malibu), steady work and it does provide you with a nice fan base. Also, if you decide to have a family, it's really good about working that in. Between her Buffy fan base and her soap fan base, she would be able to command a lot of power (and moolah) in that industry. Of course, it's also a huge step down in terms of prestige and the hours are long and grueling, so I'd only want to to be a last resort.
We soap fans just love it when our favorites come back as a last resort, though. Sarah Brown just went back to soaps after leaving to do bit parts in horrible movies like Big Mama's House 2, and the fans (myself included) act like it's the second coming. We loved her acting so much the first time around that we're just thrilled to have her back. The same was true when Freddie's old squeeze, Kimberly McCallough, came back. The same would be true if Vanessa Marcil came back as Brenda, now that Las Vegas ended. Heck, if VM came back, we'd probably throw a parade. There are also a lot of actors whom are generally regarded by fans as too good for soaps, but we're glad they stay because we just love to watch them day in and day out (Rick Hearst comes to mind; he consistently spins craptastic lines into Emmy gold). Obviously, I'm biased toward GH, but the concept is the same throughout the industry.
So even if she is having problems because she's 30, I do, at least, think she has something to fall back on.