It is worth noting that the female first person pronoun 她 is a relatively recent invention inspired by republicanism and the rise of venacular writing. Some writers in the 1920s and 30s used a more distinctive word 伊 (pronounced yi1) but over time the homophonic female Ta1 became mainstream.

What also happened then was an influential movement to fully romanise written Chinese and some of the proposals are radical even for today as they plan to do away with tones completely.

https://en.m.wikipedia.org/wiki/Latinxua_Sin_Wenz

Pinyin was a scaled down version of these except it was never meant to replace the current writing system.