Very sad. You can't save them all but when is family, sort of, it's hard to resist. I think you should though. A baby and a new dog when you don't know the dog is too much to expect of you. I like the rescue and rehoming (to someone else, not you) idea, think that should have been done years ago.
ARen't you still in school as well as your other responsibilities? Wonder woman is not a real person, don't try it.