Echoes of Power by Viola Grace

Recovering from betrayal leads to friends stepping in to keep everyone moving forward and hold evil at bay. New species are waking, and they are earth’s own, ready to defend the very ground they walk on.

Now that Dex is safe, there are only a few loose ends. Her mother is caught setting fire to her apartment building, and a roommate that Dex didn’t remember having saves them all. It is the first drop in a line of strange occurrences that keep Dex safe and let her formalize her union.
Ax is dealing with her own matches, and being the delta in the group makes things move with deliberation when it comes to persuading her to join them in intimate activities. Her new omega is very persuasive, and his years of befriending her in the gym make him familiar with her body, and that comes in handy. This wasn’t the life she had envisioned, but the guys were trying to make it easy for her. She just hoped she could go easy on herself.
The rest of the djinn are just trying to get through a convention.