מטונך – rashi is much more meduyak like me. I didn’t say that we learn anything specific about women from the story, rather we see a new darga in kibul schar, and that’s exactly what Rashi says. He doesn’t say that we learn that there is schar pesios, rather that a person should be מטריח themselves.
And if it’s a machlokes discussed in the gemara, that means it was debated; the gemara’s discussions were between members of the yeshiva. The words the almana said were “הלא שכר פסיעות יש” – she used the same expression used in bava metzia, “yesh,” that was what it was known as, much like “yesh zikah” vs “ain zikah.” She took rebbe yochanans shitah further and applied it to herself, and that she should go further out of her way in order to get the most pesios and therefore the most schar. Her expression sounds more of a reminder than her saying something new.
I don’t know if Rav even argues on the entire concept, that there’s schar for every step; he might just hold that it’s not an inyan to go out of your way to make more steps, much like we don’t wear multiple tzitzis, even though each one is a mitzvah.