the effects of testosterone are not necessarily “far worse” than removing ones breasts. Removing the major secondary sex characteristic=immediately noticeable, gone forever, implants can’t compare.
But “Oops I made a r.etarded decision and now I’m gonna knock off taking hormones” = a return to normalcy is possible if you quit soon enough. Not everyone goes bald, becomes a hairy acne-covered ape, and grows a frankenclit right off the bat. Fat redistribution/muscle development reverses. If your hair thins it won’t ever grow back but it wont keep thinning. If you grew more body hair it will soften a bit & won’t spread. Before the HRT event horizon, quitting tends to return estrogen levels to normal & stabilized.
If she stops around the time before her voice drops, she’ll probably be okay aside from shaving a bit of fluff off her face every morning- which is fucked up but it’ll probably be much less than most men, and just as much as some unfortunate non-HRT-taking women.
I don’t want to downplay the effects of testosterone. They’re quick, somewhat unpredictable, and largely irreversible. But compared to radical full mastectomy? The worst physical part of short-term testosterone abuse I have seen are hair issues (thinning on top, facial hair) and then there’s the crushing mental/emotional/social/political fucked-upness from the entire ordeal that takes years to recover from. But physically? Short term you can survive okay.
Of course, that short-term point of stopping is something like 3-12 months. I don’t know how Lena’s sister has been taking these drugs. And she’s already cut off her breasts, so it looks like she’s seriously committed to testosterone for the long haul. Or at least to the point of irreversible HRT damage. Cutting off your breasts- in the name of troondom, not cancer or whatever- is a huge investment in the sunk-costs-of-gender-ideology department. And yes, once you’re bald, that’s it. Once you have hairy shoulders and a weird 15-year-old-boy voice, that’s your voice. Once your genitals get all oversized and malformed, that’s what you’ve got to work with.
Tl;dr: Eat your vegetables, stay in school, say your prayers, and don’t stick needles full of testosterone into your legs, dummies