Help! Animate Character Pushing Cart

I am trying to make the character, in the attached .blend, hold the cart as she pushes it forwards. Can someone help me understand how to keep her hands attached to the crossbar of the cart as she walks?

I am sharing the file with dropbox because it is over the 5MB Blender Artist prefers.

Thanks for any help!

Actually it’s the other way around. You need to keep the cart attached to her hands.

Look into and learn about “Child Of” in the object constraints.

Or watch tutorials about “picking up and setting down”.

Here’s one of my uses of what you are describing…