In the fanfiction, JJ gets kidnapped right outside the BAU building. It's a bold move by the kidnapper. The team is stunned. Emily is the first to start piecing together possible motives. They discover that the kidnapper has a vendetta against the BAU. JJ, while kidnapped, manages to leave some subtle signs for the team to find. The team races against time, using their combined skills of profiling, forensics, and technology to track her down before it's too late.
In fanfiction where JJ and Emily are hurt in Criminal Minds, it often serves to explore their vulnerabilities. It can make their characters more relatable as they face challenges and pain. Writers might use this to show their strength in overcoming such difficult situations.
It could be a former criminal that JJ put in prison and who has now been released and seeking revenge. Maybe it's someone from her past that she had a run - in with during her early days in the BAU.
Maybe there's a time when JJ is in trouble during a case, and Emily saves her. In the heat of the moment, overcome with relief and a new - found closeness, they share a kiss. It could be a turning point in their friendship that then evolves into something more in the fanfiction world. It also shows the strong bond between them.
Another option is Tumblr. There are many Criminal Minds fans on Tumblr who share or recommend fanfictions. You can search for relevant tags or ask in the Criminal Minds fandom communities there. Just be aware that Tumblr's search can be a bit hit - or - miss, but it's still worth a shot.
One possible plotline could be that the unsub kidnaps JJ because she has been getting too close to uncovering his identity in a series of murders. The team then has to race against time to find her. They might start by retracing her last steps and interviewing people she was in contact with recently.
One great JJ and Emily hurt fanfiction is 'The Pain Within'. It really delves into their complex relationship and shows how they support each other during tough times. Another is 'When Hurt Strikes', which focuses on an injury that Emily sustains and how JJ helps her through the physical and emotional recovery.
They might be very cautious. JJ, being the organized one, could start making detailed plans on how to handle cases without putting herself in too much danger. Emily, on the other hand, might be more impulsive at first but then realizes she has to think about the baby. They could also rely on each other for support, like covering for one another when they need to take breaks or go to doctor's appointments.
Hotch would immediately take charge and start organizing the team. He would be calm but determined to get JJ back. Morgan would be on the front line, ready to use his physical skills to track down the kidnapper. He'd be really angry and motivated to rescue JJ as she's like family to him.