>>1919840others will seethe but your heart is in the right place. females who get by on being attractive female (really between puberty and late 20s but I can see you're thinking ahead) take it really hard when people stop being nice to them because they no longer want to have sex with them. they realize midway through life that their entire self worth was based on being hot. they then become extremely vindictive and hateful, and it's basically not curable at that point, they're a lost cause. and what's more, any advantages they gained are basically directly related to sex so unless they want to weinstein their way through their early career and then slam into the glass ceiling at age 29 years, 11 months, 31 days 23 hours and 59 minutes, they're not going to like it how their "talents" are revealed to have been a euphemism for how useful their body is to older and more powerful men and now that those men can upgrade to the latest model, they are of no value to anyone other than beta males who will settle for certified pre-owned.
just never let her forget what men want out of her and encourage her to be as "masculine" as possible, if she wants to transition that's fine too. this is how to get ahead in life, as an afab. that is how to age with grace. you can call me schizo now but you'll be singing a different tune in 30 years when she's on the future version of youtube being a lolcow as she screams at a barista for making her skim diet vanilla venti wrong and tries to get minimum wage workers fired for mildly inconveniencing her before going home and getting drunk on mommy's time out pinot grigio.
also you may wish to put a fixed gear hub and clipless on it, that is a much faster way to learn than a freehub.