Very little commentary, because very little happened. The moms talk about things that happened, but this time around, only Leah really shows the audience anything interesting.
Teen Mom 2 "I'll Be Missing You" (S05E18):
Kailyn: Javi leaves for his month of training, leaving Kailyn lonely with the kids. [when did Kailyn get a sleeve done??]
Jenelle: Nathan is released from his sentence early, and he's excited to repent his wrongdoings to Jenelle. [and we see Jace work on learning letters.]
Chelsea: She drives four hours to the state cosmetology commission, where she finally gets her esthetician license. Adam is going before a jury over his crimes.