She is cute.  I assume that she is a student.  I assume that it as a student broadcast which is something that BTN has done in past years, although in the past they clearly indicated it during their broadcast.   I believe that there were 13 Big Ten games Monday night; all victories.  They could not have that many professional broadcasters.
The thing that drove me nuts, was replaying all of those rather insignificant moments while action was still going on.  I think they have done that in the past too during early season BTN+ games.  You wind up missing a significant amount of plays because of it.