As far as I was aware, although Princess Leia was Force sensitive, she hadn't undergone any training to put these powers to use and/or couldn't use any Force powers.

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>  However, when part of the ship she's on is attacked, she is blown into space. She then uses (I assume) the Force to keep herself alive while in space, and pull herself back to the ship.
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If that's right, how did she manage to do all this? Before now, she hasn't done anything but 'feel' the Force and people connected to it.