I think the answer might depend on whether or not she has a car. It would be much more manageable with a car.
There are buses back and forth, but they might not correspond to her class/social schedule. The bus schedules are on the UCF website – just use the search feature and search “rosen bus.”
Yes, it’s 28-30 miles depending on route, and it’s almost all expressway – which could be good or bad, depending on traffic. In normal traffic, I’d plan on 40-45 minutes.
The other question I’d have would be whether her Freshman classes are actually going to be at Rosen, or on Main Campus, or a mix. That could make a huge difference.