Honestly, I doubt that she'd ever come out and visit her. I've been told I can go visit every horse we've ever sold, anytime I want, and I've never done it. I've also told people I purchased horses from they can come visit, but they never take me up on it.
But, I'd definitely mail the lead rope back to them. No sense in wasting gas and your time dropping it off.
"The greatest pleasure of a dog is that you may make a fool of yourself with
him and not only will he not scold you, but he will make a fool of himself too."