I have a feeling that we wont see her again until the dlc. Yes they took the event away to be overhauled but it really shouldn't take that long unless they actually have zero ideas beyond "repeat this but harder". As such I think it wont appear till after the HoW where they can tie the two together. Which is a shame as I actually enjoyed the event and didn't give a shit the shards were taken away as by the end I had decent guns and armour :)