I still dont get how "I dont do well with kids" is a negative attitude. And honestly, Id wager most mid 20's guys dont do well with kids (even their own) so I see it as nothing out of the ordinary.
And honestly, I see this going no farther than the emails/myspace messages that I send her so it ultimately doesn't matter. And even if I got up the nerve to go forward, Im burried so far in the friend zone with all my emotional support and advice and general nice guy behavior that there aren't enough shovels in the world to dig me out, and thats if and when she gets over the crap with her exhusband and decides shes looking for more than friends.
You can get out of the friend so pretty easily if you play it right. But I don't think you are devious enough for it.