Quota is quota is quota... except when it's not
At some places, as MSKKG pointed out, juniors and seniors either don't count in quota or there is a separate quota for them - but I believe total still applies.
It's possible to have quota additions even though one sorority didn't meet quota. But the additions wouldn't have been selected because of legacy status.
It's also possible that XYZ extended COBs to two women some time before formal rush, and that they waited until after rush to begin pledging with those who joined via formal rush.
I still say multivariable calculus is easier than formal-rush math...
