I agree it isn’t great when Lorna is left out of official family merchandise, especially now when Marvel appears to be tearing down the retcon. Older boomer fans who think H@v0k owns Lorna just because she use to sleep with him, and that should define her stories forever, will never not be gross. As I recall, they did at least mention her lineage, albeit on the back of the box she shared with a certain blond boy.
Word that Lorna is a character that exists and is a wanted and needed member of the family is going to be key moving forward as the retcon is undone, and the X-Men are introduced to the MCU. It doesn’t have to be an either or situation. No one has ever convinced me that there is a reason Lorna has to be thrown out for the twin’s benefit, or vice versa.