I have to say I appreciate the fact that my GLO no longer requires us to make those unpleasant phone calls.
As a mom, I can understand another mom's desire to get a heads up that her daughter has been released. But the typical response is always "Why?" No mom I've ever encountered accepts that membership selection is confidential and we can't tell you. That's when things almost always get ugly. So my best advice is to prepare your daughter (or granddaughter, or sister) for this potential possibility before Recruitment even starts.
From a logistical point, it would be nearly impossible at many chapters to even consider making those calls during Recruitment. It's not uncommon in the South for chapters that have 75, 100, or more legacies go through Recruitment. Membership selection meetings can run until the wee hours of the morning. Then invitation lists must be turned into Panhellenic by say 5am. PNMs received their invitations at maybe around 9am and parties for the next round could start as early as 10am.
Advisors need sleep too. Hate to admit it, but we're not as young as these collegians. Having a few minutes to say "Good Morning" to your family when you've barely seen them all week is also a good thing. Time for a shower is nice too.
I doubt those things would be possible if numerous phone calls needed to be made to moms -- and those calls are never short.