Cruel - Criminal minds enemies to lovers

Hotch this is a bad idea" Reid said following him through the prison.
"It's the only option we have left, we both know this" the stern man spoke as they approached the door.
"We can't just let her out and join the team- it took the FBI 2 years to track her down, what if she escapes? She's a murderer Hotch" Morgan spoke from the other side of him.
"We always say that unsubs make the best profilers, she is proof of that" Hotch said as the doors slowly opened.
"Hello again boys" Athena smiled from the other side of the metal desk she was chained to.
Reid frowned as she winked at him.
"Glad the black eye has healed; I was afraid I damaged your pretty little face forever" she said referring to the time they tried to catch her, and she beat Reid up pretty badly before escaping.
Athena was the most dangerous type of unsub, she was smart and had all the skills to be a expect level profiler and she absolutely used that against the team when they were asked to track her down.

A criminal minds fanfic, not based on any of the shows timeline but a mismatch of them to create its own. A psychopathic unsub is recruited to join the team after they finally caught her after 3 years of her taunting them, will she join the team? Or will the history, secrets she knows and flirtatious tension between her and her new teammates be to much for everyone to handle?
Since this is a CM fanfic there will be dark themes, trigger warnings will be at the start of each chapter- enjoy :)