Lucius was my first thought, too. (I mean, who else? Is her mum enough better to be sending packages? Would she even if she were well enough?) The fact that it seems to have been a package full of wizard rock has made me wonder if we're wrong -- rock music seems a bit out of Lucius' natural element. Still, I'd fully believe that he has a connection at the helm of whatever music company puts out wizarding music and that he was able to assemble a care package for her.

But then, wouldn't he have sent Draco something, as well? Or wouldn't Draco have registered a bit of annoyed jealousy that his father was sending care packages to Pansy and not to him?