Where is that girl taking me?

Hint 1 of 5:

You must've given her the teddy bear.

Hint 2 of 5:

Follow her, of course.

Hint 3 of 5:

She'll open up a passage you can't go in, because you're too big.

Hint 4 of 5:

She'll open up another one too.

Hint 5 of 5:

Go down and beat up the skeletons.