In Jurassic World, Rexy was back in captivity, but she was eventually freed by Claire Dearing to battle the Indominus rex.
Assuming that Rexy wasn’t somehow transported to a different location, it looks like Jurassic World 2 will be revisiting her on Isla Nubar.
Rexy later returned to eat some of the raptors that were attacking the main characters.
With the help of Owen Grady’s surviving raptor Blue, they killed the hybrid dinosaur, and just like two decades earlier, Rexy roared triumphantly when all the remaining humans had evacuated the island.