She was always an assassin. That much was clear through the end of the TV series. She was not so much powerful as extremely fast, precise, and just a bit psychic---enough to anticipate an opponent's move, anyway. Oh, and if this is what 12-year-old girls look like where you live.....
Is it just me, or does that picture make Sarah Connors (sorry, name of the actress escapes me atm) look like Michael Jackson?
Yes, it's just you. Here's some more Summer photo sessions: http://www.whedon.info/-Graphics,448-.html Especially check out the Terminator promo photos on pages two and up. like, oh, this one: http://www.whedon.info/Summer-Glau-Terminator-Sarah,27634.html?id_document=95294#documents_portfolio
I'm still going by how she looked in Firefly. I've never seen the Sarah TV show. She certainly doesn't look like a full-grown woman in Firefly.
Of course not, because she was a 19-year-old actress playing a 17-year-old girl with mental problems, with appropriate performance and makeup to sell that character.