Nope, she died in the same incident that paralysed Tim's father here. Then he got better, married Dana, and then he died. And then Dana had a breakdown, and then Bludhaven was destroyed (which was where she was living), and we haven't seen her since, although I seem to recall someone saying she survived.
And somewhere in there Steph, Kon and Bart died, too.
And with Bruce dying, this is the fifth parent Tim's lost.