Not related but the same mistake :
Those 2 examples above are realy easy to make, especialy if English is not the first language. For those who do speak english as a first language, it becomes easy to spot cause when reading the sentence out loud it just doesnt sound right, like there's a break mid sentence. "Her" in both cases flows better.
Be wary of those types of sentences, they can be very anoying to fix, cause you often only find out after lots of pages of dialog and have to do alot of backtracking through what you wrote.
As for the game, the premise is actualy very nice. It's both thought provoking in how does the MC determine their physical gender in this instance (Male, Female, Gender-Neutral) and atleast its not another male gets turned into female trope.
So is the MC suffering from amnesia too? Cause that would realy confuse the MC alot, adding to the MC overall growth as a character in my opinion.
Good luck, and i hope i didnt sound lecturingly in the above portion, if so my apolagies (I aint perfect in English myself realy).
PS: the Male guy (Dad?) kinda as a weird vibe to me, like his forehead is to large, and his face (eyes, nose, mouth) is to small, yet the outer edges of the head are to large. I dont know how to describe it, its like he is wearing a painted on mask.