I have to agree w/ adpiucf.
I was in a similar situation to yours some time ago .. the only difference being we weren't really "best friends" anymore, but we still talked once in awhile, so it's not like we weren't friends at all.
The first time she went thru recruitment, she'd call me everyday (she was at a different school) and tell me how the parties went, which ones she liked, etc. She'd also say petty things like "I don't know if I want to join this sorority beacuse they call themselves a
fraternity and
fraternities are for guys" (

) Or "I like this group's colors and symbols better than the rest of the sororities on my campus" or even "I like this sorority better because their letters look more
greek"

I kinda got irritated with her, and tried talking to her about sisterhood and stuff like that, that make GLOs worthwhile.. so what if they are a women's fraternity? or their colors are neon green and electric yellow and they look cool?
She didn't get a bid that year, but she rushed again and had a totally different mind.. she grew up, and she ended up finding what she really wanted : sisterhood.
Moral of the story, I would just let your friend be. Unless it's your chapter she's talking about (which I'm assuming it's not b/c of what you said), I wouldn't get involved with talking to the other presidents/recruitment vps about it.