I cant recommend driving like that for that long until spring. I had bjoint done at speedy auto, came in at 250sh taxes in, seems like cheap enough of an insurance and investment if she plans to go until spring. Granted i did drive for a week or two with the clunk, while i found the shop i trust and price i liked, probably not smartest idea either.
I know its bad feeling when u dump money in a car and then let it go, but u got to evaluate circumstances and needs. Maybe if u fix the bjoint ur friend may ride it for a bit longer. Or maybe something else $$ pops up