this review contains spoilers for the final season of OITNB. I've left it quite long after the show dropped before posting this review, in the hope that fans of the show have caught up by now!
The final season of OITNB had a lot of loose plot strands to tie up, including Taystee being given a life sentence for a murder she didn't commit; how Piper acclimatises to life on the outside, whilst her wife Alex is still incarcerated; and Daya being the prison's chief drug pusher, whilst her mother supplies the drugs and her boyfriend, the Head Guard, sneaks them in.
This is a lot to juggle as it is, but
OITNB's scope has never been anything less than ambitious, and in keeping with topical issues, the prison has freed up space to house detainees who are on the precipice of being deported. Two of said detainees include Maritza and Blanca, inmates who had been released in previous seasons.