I know it's a little disheartening to read about when a potential new member is not offered a bid because of their grades. I know that it my chapter's case, we normally didn't want to subject the PNM to the possibility of the stress of going through New Member Education having a negative effect on their grades, which would drop their GPA even further. Being in a GLO is a great thing, but the different events and things involved in becoming a member may take their toll on an individual. I know in my case, the semester I first joined ADPi, my GPA dropped significantly because of the additional demands on my time as well as some other contributing factors.
I think the chapter may have the girl's best interests at heart....after all, most of us did go to college in order to get a degree, not to be social and join organizations.