As long as she's not pulling one of those round balers
it should be fine.
IMO an H drives great but an M has more power so my vote is the M.
__________________
Daniel G.
.
(May 1970) 147 w/an IH spring assist, 48" deck, 42" blade, 1969 73, #2 trailer, 10" Brinly plow and (on loan) Dad's #2 tiller.