Room Calendar + Delegate (Moderator) + Moderator gets entry in their cal but not wanted + Room Calendar remains tentative

Hi all -- 

As per the title its not a very difficult scenario. I have an executive assistant whom is an charge of approving/denying room bookings. She gets a booking request and approves accordingly and the booking:

goes into her personal calendar (not acceptable due to lots of resource bookings)

appears as tentative even when the booking is approved in the room calendar

Very stock exchange setup thus far and new to exchange 2013.

Thanks for any assistance