She's cute. What reason would she need to deadlift? Teach her to quat if anything. Is it her dream to become an olympic powerlifter? She's gonna fuck up her back doing it like that. Nevermind that fact that she's gonna end up looking like a dude.
Fuck back from deadlifting? Gosh... I thought at least bodybuilding board people have more knowledge about basic lifts than average goe. I guess you never deadlifted >200kg or were close to proper form then.
Anyway what's the problem? Maybe she should choose some more feminine, "light" activity like say... ballet dance?
FUCK NO.
My girlfriend is an ex ballet dancer. Started when she was a child, had talent and "pro" aspirations. Well she's got most of her joints completely fucked up and according to her she's not worst. Some of her friends landed on wheelchair (temporarily but still) becouse of injuries. Also they don't fuck around in ballet. You know, when a bodybuilder gets injured he cries like a baby and takes 1 month off. When ballet dancer gets injured she does anything humanly possible to hide it and be able to train until she can't fucking get out of her bed. It's one of craziest activities actually.
Not even mentioning of what most popular "kids activities" do to our brain. Ballet dancers, competetive mathmaticians (like me), singers, if they were ambitious themselves or had ambitious parents (worst scenario) they are really fucked up mentally after that. I was ambitious as hell but couldn't cope with stress, at day of competition I was paralysed. I sucked like hell and I really fucked up myself for years becouse of that.
So I would prefer my daughter doing powerlifting than this, honestly. Most kids have ambitions and wanna prove they are worth something. Powerlifting is one of those activities which requires time and rest in order to get good. You can't train like a madman 24/7. Comparing to anything there's no stress, community is rather friendly and apart from top, top level there's no pressure.