I doubt this for two reasons.
1. This leaker doesn't exactly have a solid track record, often seen parroting things other leakers said.
2. When was the last time Atlus released DLC for a game that wasn't even announced when the game came out? Most of that DLC has been DAY ONE DLC.
I cannot think of a single Atlus game that has released that got DLC that was not at least ANNOUNCED the day the base game launched. Some examples:
Margaret was DLC that released a week after the launch of Persona 4 Arena Ultimax (2014 launch, not the 2022 version):
https://www.shacknews.com/article/86481/persona-4-arena-ultimax-paid-dlc-detailed
SMT IV Apocalypse, announced before the game launched, released soon after.:
https://atlus.com/smt4a/dlc.html
Shin Megami Tensei V's DLC (including more significant DLC like the Fiends and the demon quests such as Artemis, Mephisto, and Cleopatra) launched on day 1
Soul Hackers 2's significant story DLC was released on day 1. There was a patch that updated some things later, such as adding functionality and added one new demon (Soul Hackers 1 design of Pixie), but that was more of a post-release patch than a DLC.
I think if P3R really was going to have DLC for FeMC or The Answer, I think it would have been announced already, as badly as I want FeMC.
So we figured out who this leaker is, they're legit.
But they have been cribbing off me mostly from here, no beef with them. They can take all the heat if they want lol.
Not a shred of a female main character in the DLC but things could change.
Well I didn't see your post before posting the above, so I guess I am (possibly) a dingus, but we will see.