The only hybrid SUV currently available is the Ford Escape. Mid 20s does sound about right for price. Lexus/Toyota hybrid SUVs are just about to hit the market. The Toyota one will be 30+, and the Lexus will be like 40+ though.
If she's not after an SUV, the Prius is about the only other choice, since its actually got quite a bit of room inside. Its also mid 20s, I think. The Escape uses a Prius-derived drivetrain, licensed from Toyota, if I'm not mistaken.
Otherwise, if she's OK with a non-hybrid, Subaru Outback or Forester will probably get the best mileage of small SUVs.