Would I change my advice? Well...I suppose I would alter it slightly, but I'm not sure I'd totally revoke it. I think it'd be okay to tell her two best friends, provided you're sure (lol addressing you now mylife. I'm having trouble working the pronouns here

) you can trust them. My only fear there would be if one doesn't accepts that and decides to spread it. That could pose a problem, certainly. But I think she has a point in wanting someone she can be open with about it.
So Mylife, at your age, I would tell you to be wise in who among your friends you decide to confide in, but if you feel you can trust them, I don't see a problem.
Of course, I would defer to someone who's been through the process of coming out, so I ask you take my advice with a grain of salt.