I don't know how much you want to get involved but you could offer to help find them a home. I did this for my ex-sister-in-law. She "couldn't find" a home for her 2 yr old pitbull and her "only option" was to take her to the SPCA where they told her that she would immediately be put down because they didn't have enough room to keep anymore pitbulls. I went out over the weekend and put up flyers everywhere, told people the situation and found her a home in less than 48 hours.
I put the above in quotations because I feel that she didn't really put any effort in... I hate it when people keep pets as novelties and then just "get rid" of them when it's inconvenient for them... and they do that all the time... grrr..
Anyways, just an idea!