Went through something like this myself.
personal experience
Being bullied and called a tomboy or a lesbian or worse because I didn't wear make up or paint my nails with glitter etc. And wasn't submissive and starstruck around anything with a y chromosome. I did find during high school that the girly-girls were afraid of me, and some of their name calling and other idiocies was because I didn't conform to a gender stereotype that they were fully invested in. They couldn't take it that I wasn't falling into line with their very bi-polar gendered view of the universe. Didn't help that they were from much wealthier backgrounds and 'higher' social status (at least in their own opinion), so they felt they had a right to dictate everyone else's behaviour. Being a fair bit smarter than them didn't help either - but did eventually allow them to label me a 'brain' and therefore outside their gender norms.
And they were majorly pissed off with me because most of my friends were boys. Who talked with me like I was one of them and we liked each others company but didn't flirt. When I got married I got a fair few letters from the girly-girls (this was before texts) expressing surprise that I'd managed to be 'normal' enough to marry.
One of the positives of this was that I learned early to store my identity inside me, rather than in the clothes I wore or the things I owned. Not being a girly-girl didn't make me a boy or a lesbian or anything really, but it did take a bit longer to find my niche, as back then there was a hellava lot more gender stereotyping pushed onto girls. Not so much of that nowadays for which we can all be thankful.
Miniest may have a harder road to travel, and may never find instant unthinking broad community approval cos there's still a fair bit of stereotyping out there. But I'm also sure that Miniest will find a way to be herself, and to do that in style!
Hugs to both of you.