She doesn't have the shard. All pieces of the phoenix seem to have began coalescing for the current storyline with Jean (if i'm remembering correctly). The phoenix gifted Quire with the shard after his adventure with Thor (where he, Thor, Warbird Gladiator, and Kid Gladiator fought the Shiar gods) and the shard was pretty much his to command. So, Quire shot his one-time, get-out-of-jail-free phoenix shard at Jubilee, it passed through her, activating her old powers, getting rid of the vampirism, and presumably went to Jean for the current story line.
We'll see. If they truly want to they will make her a vampire again.
Ask Hannibal King, once a vampire always a vampire. He was supposed to have been cured when Dr Strange cast the Montesi Formula, but he was reverted for the Midnight Sons junk of the 90's.
Though making her a vampire was pretty stupid.