He's not the only one the "fans" are star struck over. Obama had his star struck "teenage girls" as well.
But again, I don't think it's a bad as they want. No President is ever going to be universally loved like past ones were, but we're too polarized to ever have both parties respectful of the opposing candidate. I don't think the hatred for Trump is enough to overcome at this point.
BTW, you might want to check with the kid. One Direction broke up some time ago which she probably knows. Time to up your pop culture affairs knowledge, dad.