If I were Vince McMahon, I would offer Trish a position as a road agent/trainer for the divas... Finlay held that position until he was fired not too long ago, so the position is available. This way, she could work behind the scenes, booking and devoloping the WWE Diva storylines, all while having the ability to help further their training and, when needed, could go out and work a match, which is one advantage she'd have over Finlay in the position.
As for "but, she's never booked matches before" people that will probably post:
A: You have to start somewhere.
B: How much could really go into booking the Divas division?
C: Could she do any worse? Realistically, the divas involvement in the biggest show of the year was having the first woman to win both WWE women's titles job to a reality star after taking a total of two moves.
Now, I don't know what sort of commitment, travel-wise, it would take from the WWE, or if Trish would be willing to do that, but I think it could be a good situation for WWE, for Trish and for the Divas division.
-Bill