is there any resource you would point to for reading on la sirène?
Not really, there's not a lot out there that isn't a reimagining of Yemoja as Lasiren, which is incorrect, or just super surface level. I imagine that is by the design of Lasiren; she is historically a spirit who holds her silence and moves in the depths quietly until she wants to be seen. There's a paper called 'Sea Secret Rising: The Lwa Lasirenn in Haitian Vodou' by Ursula Szeles, from the Journal of Haitian Studies, but there are def things that are presented as fact that are instead opinion, like Ezili Freda and Lasiren having a somewhat contentious relationship and not coming to the same fetes.
I could help with specific questions, but learning who and what Lasiren is really comes from direct relationship with her, as she chooses to show herself.
