Sadly, that's not possible.
You can't transfer already donated money to another user

Quote (SirRonLionHeart @ Aug 23 2011 06:56pm)
Yes, you can donate in part for somebody else's account.
True, however if it has already been added to a users account, it can not be sent to another user.
This post was edited by Fault on Aug 23 2011 04:58pm