She can generate energy from her body that can be used to destroy internal structures of things, but the energy can also be used to heal if more refined control is applied. To date she's only been able to heal the fractured wing of a bird with it, though.

Her eyes also see the internal structures of things if she's within three feet or less of them.

Fireworks, Chakra, or Implosion would work for her, but she wouldn't be able to think of the latter two on her own. She'd also reject Implosion on the grounds that people could shorten it to "Imp" ^__~ Being an elementary school aged kid makes one more aware of possible embarrassing nicknames.