I am recently Re-reading EoTW and i came accross at the end of chapeter 7 when Rand askes moiraine for help with his sick dad. He says "i'll pay any price in my power if you help him. Anything."

and Moiraine says "We wil speak of prices later, rand, if at all"

so i dont remember if she asked him to do something in repayment for her help with his father.

And if not then if/when she returns what may she ask for?

This would be better asked on the General Wheel of Time Discussion board.

She hasnt asked for anything yet...I figure if she was going to she wouldve already...instead of submitting to him like she did in book 5.  I do hope she'll show up in the next book so we can have "3" more w/ her.  But, I doubt she'll ask for anything.