Choose college over him

This will be very tough to get through to her at this stage of her mindset, no amount of reasoning nor threatening can help. Nonetheless, we must convene to her that people change for better or worse, and couples split for no apparent reason.  If she really loves him, she shall give him some freedom, give him freedom to choose.  If he really loves her, he shall give her freedom, freedom to choose.  If she really loves to attend college B because it is College B, there is not much we can do especially the cost of attendance is about the same.  If in the end, their relationship work out, it is meant to be.  If it does not  work out, it is never meant to be, at least she chose her college over him.