Amazon is normally happy to do this for a return -- they'll send UPS to pick it up. But in this case, since she didn't order it, it was hard to get a correct shipping label. (which normally probably wouldn't matter -- if UPS has a shipping later for a 1 pound package of coffee and you hand them a box of shoes, the UPS driver isn't likely to know or care.
But for something as large as a balance beam it's more of a problem.
My point is essentially that it should never be a problem for the accidental recipient and that we should judge them harshly for the cases where it is.
(I don't mean they should never make a mistake, I mean they should have a robust process for dealing with the mistakes)
But for something as large as a balance beam it's more of a problem.