I've been thinking of a couple names for the "reincarnated villainess" story for Malfoy. I've seen a few bouncing around here and there.
Dracina and Draconia are recognizably "Draco" in appearance or sound but I'm not really a fan of either.
Lyra comes up a lot, but that's the old magic from the deep of HP fanfiction. It's stylistically not "Draco" but it does fit with Draco's naming style: a constellation. In this case, the Lyre instead of the Dragon (they're also neighbor constellations). This name has commonly been used for female Dracos, Draco's twin sisters, and Draco's daughters in countless fanfictions.
But then there's Dracaena. It has the same pronunciation as Dracina but is more...elegantly spelled. It also is the Latin for "female dragon", so it's pretty on the nose as a girl version of Draco's name and still maintains the origin of the name being the Draco constellation. But the real kicker that makes me lean toward this one is the dual tie in with her mother, Narcissa. It matches her mother's botanical style name, it pays homage to the original Draco's name and origin, and it feels suitably noble.
...I may have thought way to much about this...