[soblessed]

Alana, I don't know what type of ponytail holder that you are using, but if it is causing tangles, then it eventually will lead to breakage (if it hasn't already). For good ponytail holders, you should be using either the Goody "Ouchless" elastics or hair scrunchies. And, when you go to take the elastics out, just cut them out of the hair (as this will not cause any breakage).

Now, at night you should always take the elastics or scrunchies out of your child's hair before bed. As, you can ceretainly opt to spray it with the Moist Curls and put the Milkshake on it and then braid your daughter's hair and put a barrette on the end of each braid to keep it from coming loose (or you could just twist the end of each braid with a little extra styling product to form a curl on the end instead.)
Also, you could opt to just put a satin bonnet over your child's head to protect her curls while she sleeps.

So, just doing a conditioner rinse on your daughter's hair that is sticking out from her pontail would not be appropriate.