I would understand if that were the case. Won't be up in arms if it didn't happen, as I'm mostly fine with most of the Legacy stuff staying just that. My memories of it are the same whether they are officially canon or not. I do think though that the character could fit into new projects rather seamlessly.
Or hell maybe they're not allowed to use her in the same way no one was allowed to use Anakin and who would become Padme in the 90s...the movies got dibs. Maybe she IS Rey's mama.