Completed all Maria Jenkins AV missions and didn't get the badge

[shmurtypants]

I went through ALL of Maria Jenkins' missions and fought every AV, but even after completing every mission and can no longer get any more from her, it still tells me I've only defeated 13/14 AVs. I'm confused as to how. Is there another mission from another contact that has a villain I'm supposed to beat to get the Dimensional Warder badge?

[Hedgefund]

Anti-Matter.  You can see Null the Gull to confirm, he has an option to check Dim Warder progress.  You can choose to do the Keyes iTrial, Tina McIntyre's arc via Ouro (last mission has him) or join someone who is doing Tina's last mission.  It's not terribly uncommon to see people advertise in LFG that they're doing it.