I don't think they actually closed the chapter. They didn't participate in formal in the fall, and they gave all the girls alumnae status and just now started the recolonization. I'm an Alpha Gam at the University of Michigan, and we tailgated with our sisters there for the OSU/U of M game in the fall.
My sorority sister's younger sister goes to OSU and she joined Alpha Gam at recruitment this January. She absolutely LOVES the chapter and her new sisters! Everytime she calls her sister she has something great to say about her awesome new sorority. Good job ladies!
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"Remember that apathy has no place in our Sorority." - Kelly Jo Karnes, Pi
This is all very recent. Their numbers had been dropping severely over the past couple years, so from my information, they gave the remaining girls alumni status and are starting the chapter over. They aren't participating in formal recruitment but will pick it up again in the spring.
I really wish them the best of luck-- the Alpha Gams I know are some of the sweetest girls!