If your friend chooses one of the Marriott Palms units over by Downtown Disney at the Marriott World Center, I've heard that Sabal Palms is getting ready to be refurbished. So I would pick Imperial or Royal Palms over Sabal since I've heard the first two have been refurbished.
Hopefully you friend has enough trade power to maybe get a DVC exchange. We were able to get a DVC exchange into an OKW 1 bedroom for the 2nd week of March (we just matched). If she doesn't need a 2 bedroom, she has a chance of matching if her resort has enough quality/trade power to pull DVC. Doing online searches on II, I've seen two studios and a couple of one bedrooms for the first and second week of March. The closer you get to prime spring break weeks, though, the harder it would be to match for a DVC. And if she needs a 2 bedroom, that's even harder.