Leotie likes to stare at her siblings' (or anyone's for that matter) tattoos. Not because she wasn't any but because they fascinate her. She's always wondering why they're there, what they're for, and how painful it must've been to get them.
She knows it's rude to stare, but she just can't seem to help herself. (Though she does get embarrassed if she's caught staring...)

In a somewhat similar sense Taima will try to discreetly stare at her siblings' scars. She's fascinated to know the histories behind them though wouldn't ever dare to ask.
She's also kind of shy about it and feels she has no right to bring it up or complain about anything that has or is hurting her. After all she is all too aware of the fact that her siblings' received at least some of their scars from battles or other such causes, while the only scar she ever got was on the back of her left leg from a pocket knife after trying to run away from a man in an alley....
(She's never told anyone because she feels it's completely insignificant compared to what they've gone through.)