Takes place after season 23 episode 2
Kat packs up the house getting ready to leave New York. Kat hears a knock then opens the door, "Hey Rollins, come in." Rollins entered, "So I heard you quit." Kat closed the door, "Yes. After I got shot and almost died, I just didn't want to stay at the special victims unit anymore."
Rollins nodded, "I understand. Well, before you leave, meet us at a cafe." "Sure I will." Rollins exited the apartment closing door.
Meanwhile, Kat showed up at the cafe, "Hey guys." Finn gave present, "Here's the present for you." Kat sat next to Fin, "Thanks!" Kat opens the present then takes out a picture frame of Rollins, Carisi, Benson, Demore and Finn, "Oh my gosh, a picture of us! Thank you, Finn." Finn drank a glass of water, "We decided to give you a picture of us so you can remember us." Kat smiled, "That's wonderful. I'll miss you guys."
Meanwhile Rollins dropped Kat off at the airplane, "Here we are. I'll miss you, Kat." Kat hugged Rollins, "I'll miss you guys too."
Kat walked up to security gate then put shoes and purses in box for scanner then she walked to her gate and waited for few hours
Few hours later, Kat got on the airplane then later took off.
The end. Sorry if this is short i can add more let me more