Alright, if she does that she won't be able to move one of her arms.
Ahaha I don't even know. She's a kid so you could rationalize that the spider's grudge would be softened since spiders have their young and recognize that children = purest of all humans, so it would be less severe. That way it wouldn't have to be spiders following her everywhere and trying to nibble on her. Though I guess she'd just flick them away xD