system
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human
[Batman: The Three Jokers] What the hell is going on with the ending? SPOILERS

I am quite confused. 

So... the Joker's wife and kid never died? 

If I'm reading the panels right, Batman, as perhaps Matches Malloy, gives his wife cash to flee town?

Which ultimately causes more damage than good. I mean, I hate domestic violence, of course, as does any sane man, but the Killing Joke doesn't indicate a particularly violent family, though, that whole thing of the Joker as the narrator of his story tends to cast doubt on anything like that.

I'm real confused. How the hell did Joker, with his enormous talent for ferreting out secrets, not track down his wife, and SON, heir to the Joker empire? 

Who were the other two jokers? What of their origins? 

More questions were brought up than answers, and I'm looking for answers.
gpt
In order:  


1. Yes, this was a abusive family. Its a retcon, but its established here that the Joker was abusive. Perhaps he warped his own memories in the killing joke. The family faked their death to escape him. Their abuser later turning into the Joker didn't exactly inspire them to change their mind about it.
2. The joker simply doesn't care about his old life very much, and only sometimes remembers he even had a family, and when he does he thinks they're dead. While he might well be able to track them down if he tried, why would he ever bother?
3. The other two jokers were just random people turned into new jokers by the first joker. Its ambiguous which one was the real one, but the other two were created by the first joker to help with his crusade. Their origins don't matter, really. They're gone now. Only the Joker remains.