I'm not sure how well Erased and Records on File will work together. You, as GM, can always juggle them about a little, house rule it for story purposes, and say that the Erased works on all her files except the ones Horizon has, I guess...but otherwise, having both at once feels a little counter-intuitive. You might also want to look into Sinner for her (if she's a real person with real documents), just as an aside.
Other than that, it sounds pretty cool to me. I'm with ya on a datalock not necessarily being unusual (so it might not need to be "mysterious" on her), and the other stuff all sounds pretty reasonable. I think it'd be a fun character.