TM, while your W said nice things and it is possible that she is doing so to look good in the eyes of others and therefore possibly attempting to manipulate you either directly (guilt, because she is being "nice") or guilt (because others might think you are being a jerk)...
What you told the mediator is appropriate.
And the mediator will sift through info on both sides to determine if your request is warranted or not... but the end result is... a mediator does not judge, nor do they set the end results... a mediator is supposed to help work the two of you through to an agreement...
which is why in high conflict, mediation can sometimes fail...