HOW DO I OPEN THE BARN DOOR?

If you have looked behind the vines you will have seen that security is a little higher than what you'd expect from the average barn.

Have you had your dinner yet? Come back when you have.

You need a passcode and a hand to scan. Both can be found in the farmhouse.

You get the passcode from the parlor, the hand from the kitchen.

The hand is attached to a living human of course, and it'd better stay that way.

Any ideas on how to get sleeping Ida (along with her hand) to the barn?

There's something near the barn that's just the ticket.

Take the wheelbarrow from the barn and discuss your plan with Calvin.

But first you need to get rid of distractions (and unwanted visitors). Come back when you have.

Use the wheelbarrow on Ida, then use Ida-in-a-wheelbarrow on the hand scanner.

The passcode is the word spelled by the rearranged books in the parlor.