@MsClean - I don't want to discourage you but those little does have been known to have several kids (babies) at one time. Three to five is an average number.
I don't know what your neighbor's planning on doing with them but it sounds like she already has buyer's for them. And to be honest with you as cute as they are, especially when their kids, it won't take any time for her to unload the goats she has for sale.
If all else fails she could give them away or offer them to children in some animal programs like 4-H.