Toedtoes has it exactly right.
The companion will have input on travel plans.
What exactly does that mean? How many times in your professional lives have you been told that? How did it work out for you?
The chores will be shared.
Who will be the arbiter of said sharing?
There is no denying that there will be some sexual tension. Probably won't be overt,but it will be the elephant in the room. Any healthy male or female has desires and urges, especially over an expanded period of time. Rv,s are not built with modesty and privacy in mind.
Hey Mister go take a walk in the pouring rain for half an hour while I shower and get ready for bed?
Most men over the age of fifty have some level of prostate problem. Trust me at 02:30 when my bladder says git up,I often don't have time to think about modesty and decorum. Perfectly fine with a wife or girlfriend,but with an acquaintance?
In my mind there are only two ways for her to accomplish this dream,one is to hire a traveling companion on a solely professional basis. The second is to have a companion with his own rig to follow along.