You should try MLTVacations.com
We go to Vegas from Oklahoma City and they always have flight/room packages
from about $300 for 3/4 nights, depending on where you want to stay (the
strip or old downtown). They might have something out of an airport located
close to where she lives. Ask MLT if they have anything all inclusive.
Last time we went, we stayed at the Freemont downtown and got airfare, 3
nights and all meals free for $289 per person.
Don't buy the transfer to the hotel. It's more fun to get a limmo at the
airport and it's just about as cheap.
You might look at Travelocity and FunJet Vacations, they have pretty good
Hope she has a great time.