You probably know what I'm talking about since reading this topic's title.
Well, so the first time Alice was pulled into Wonderland, she was on rooftop behind Priss Witless. Suddenly the old woman is transforming into Jabberwock (Alice's hallucinations start here) and some seconds later, floor "collapsed" thus taking Alice to Wonderland. In practice, Alice probably fainted or something.
When her mind returns from trip to Wonderland, her physical body is in the river.
So the questions are:
1) How she ended up in the river?
2) How she didn't drown?
And of course I assume that Alice has no control over her physical body, while her mind being in Wonderland.