Why not just compromise???
Do it her way!!!
Sounds like your trips would be doable w/o a toad - why not give it a try for awhile.
Tell her you are trying to be open minded and ask her to do the same for a period of time and then revisit the +/-'s
We started in a 28 ft Cl A MH - no slides - no toad, Trips tended to be shorter destination trips and stayed around the campgrounds. We frequently traveled w friends and we alternated breaking down & driving for a day trip now and then. Wasn't the end of the world but did limit where we went and what we saw.
Ultimately decided we'd like to have more space (as in slides) stay longer and see local sites & attractions... so upgraded MH (used) and bought & outfitted a Toad (used CR-V).
Enjoyed the next 10 yrs enough that we said if we want to keep doing it it might be time to upgrade again. DW got to choose layout & amenities
I got to choose chassis & engine (as in Diesel Pusher)
and we opted to upgrade to a newer used Honda CR-V.
Don't be afraid to take some time and test the waters to see what your RV style is and what it evolves into.