Tell her to get used to the DRW or lower the expectations for a trailer. In the begining my DW was told that she would be doing some of the driving or we were getting nothing at all.
No grumbles at all. She enjoys the roads that make me drowsy. Doesn't like urban roads with trailer but is perfectly happy to drive the dually anywhere without the trailer.
Yes, the dually is a bit of a pain in carparks & really sticks out in streetside parking. Adapt to it. Park further from the door where you can take up 2 or 3 spots & walk. Learn how to use mirrors. Who says women can't drive large vehicles? Look who drives so many schoolbuses.