I had a similar, mild, concussion playing pickup bball in college: Blow to the side of the head (temple), neck muscles also involved (quite sore the next day or two). I'm told I was scatterbrained for about 20 mins. After that, I was woozy but coherent for the rest of the evening.
I sure didn't feel like playing sports for a few days! It was probably a week or so before I felt like playing in another pickup game, which is a much less intense affair than an official varsity game at the college level.
I'm betting she will be up to snuff for the Maryland game. I'd be happy to see her sit this next one out.