This is Kelly, and yup she's going for number five (self control? What's that?), this is Danielle, daughter of Jessica Jones and Luke Cage, so yes, she exists in the comics right now, but she's a baby, so there you go. Alias comic canon counts, but since the rules of the game are all 'nope to Civil War and House of M and whatever is going on right now in comics' none of the Civil War et all stuff happened . But to save myself from writing a massive AU history, basically what I'm going to say is that Luke was affiliated with the Avengers on and off for many years until he stopped with the hero business for real.
So Dani was raised in New York, but has spent the past few years on the West coast being part of the West Coast Avengers. Due to some team shuffling, she found herself out of a job - - but than Sean and Emma stepped in and hey, instant job offer. Plus they paid for her to move from coast to coast, so yay!
Now what exactly Emma and Sean hired her to do, is basically baby sit the school when the X-teams are off doing their thing. She is also going to be helping upgrade the security system for the school. What this means character wise is characters might have new key cards issued, and Dani has visions of running fire drills ("you call that moving out of a burning building!? If this was a real fire you'd all be toast! Well except for the pyros, they'd be fine …").
Ummm what else . . . She's kind of annoyed and irritated that she basically got downsized from her old team (I'm going to say that they had a surplus of strong people), and she hasn't told her parents that she's moved back East yet (her mom was a PI, Dani is sure that she'll figure it out, what with the caller ID now showing a New York area code when she calls . . . . ).