M.L.
hey R.,
I guess I would have to ask you what do you get out of this ?
Do you like spending time with the kid ?
Why the "torn" comment ?
Do you want to get back with her or are you ok with being friends. If friendship is good for you, then it's ok to babysit your friend's kid.
If you feel more still and think helping her is going to get you closer to her or make her feel obligated to you, then I think it's best for all to end this "friendship"