I'd try looking in Leishear Village townhouses for a rental. Hammond Middle and Atholton High. both very good.
The Bowling Brook Apartments were always pretty nice when I lived close by. I think they include some utilities. And there is a library within walking distance as well as historic Savage Mill shops. I'm not sure about that middle school. Patuxent Valley. But worth exploring. Hammond High is a decent high school. Not top of the line, but not bad.
Both are 20723 zip codes.
Whiskey Bottom area is cheap but has higher crime rates and the schools are not as great. Also 20723.
I lived in this area growing up, and you can shop more cheaply in neighboring Laurel (PGcounty). A lot of military folks around too, because of Ft. Meade/NSA.
Howard County has decent parks and recreation. Low prices for classes and sports. Shopping at Columbia Mall, etc, is pricey like the rest of this area. No great local transit bus service. But good access to MARC train to Baltimore or DC.
Does she have a car?