Whatever is "calling" to Baylan was obviously known to the Mortis Gods, as their statues were literally pointing him in that direction. So even if this thing isn't Abeloth by name, it will obviously be some ridiculously OP entity/power. Why Baylan is the only character who is seemingly aware of it right now(aside from presumably the Nightsisters) seems a bit odd though... Unless it is choosing to make itself known only to him, I guess.
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"I am tired of Earth. These people.
I am tired of being caught in the tangle of their lives."
What are the odds that Ahsoka becomes The Daughter? I mean think about this, given how she apparently has a connection with her and it honestly wouldn't shock me at all, considering how my Dave favors her and wants to put her in everything and meet every single important person out there.
Bet in this movie that's suppose to come up and if they do bring in Abeloth...which I hope they don't, I wouldn't be shocked if Ahsoka fights Abeloth or whatever Entity they make by being a conduit of the Daughter or some other kind of nonsense.
Seeing as they wanna connect all these threads into a movie or some such, I feel like this would be likely.