Try and control my excitement and then ask her what her name is. Then I'd become friends with her.

WWYDI you woke up one morning and found that a lamppost was in the centre of your front yard?

Squeal.

WWYDI you found yourself in Miraz's castle during the raid?

Get out when Peter told me to.

WWYDI a strange, silent figure appeared at the head of the table during supper, and then disappeared? 😆

Scream.

WWYDI you found yourself in Jadis's castle?

Get a blowtorch and melt it!

WWYDI you found out that Narnia really hasn't ended after all?

Try to find a way in, of course!

WWYDI you spotted a dryad I your back yard?

(@Hobbit: lol on the blowtorch)

Probably think I'm seeing things.

WWYDI you and a wounded Edmund were lost and being chased by, let's say, ogres?

Oh...interesting scenario. I would get Edmund to a safe place and then fight them off with my sword or whatever weapons I had with me.

WWYDI you found yourself all alone in Cair Paravel?

Probably hole up in my room or the library or some corner of a garden with a good book (or two or five). Or maybe go for a ride.

WWYDI Tumnus offered you flute lessons?

Accept

WWYDI came face-to-face with the White Witch and you were unarmed?

Probably get turned to stone. 🙄
@ Dilly, earlier: My brother once saw something semitransparent green (and shaped like a human) fly out of a tree, hit him, and disappear. He said that if he believed dryads existed in our world, he would have said that was what it was. 😯

WWYDI you were stuck behind a couch during a secret-unto-death meeting?

Not sure. Eavesdrop, I suppose

WWYDI you got a hold of the enemy's top secret plans for battle?

Tell the king!

WWYDI you were travelling alone in the woods at night and ran across a hag?

Kill it.

WWYDI you accidentally broke Peter's sword?

Feel incredibly horrible, beat myself up for days (or weeks or months (ask Tenny: she knows I have a bad habit of doing that)), possibly cry a little....

WWYDI Susan let you use her bow?