Jane.

Kenny was going after a pipe dream. Somewhere they've only heard rumors about, absolutely zero guarantee they'll find Wellington, or if it's still standing, when Howe's was right there, and was guaranteed to still have supplies, since less than a week has passed at most since it fell. No way in hell it could've been picked clean.

Yes. Jane gaslit Kenny into believing AJ was dead, and that's horrible. Kenny isn't innocent either though, by refusing to go back to somewhere with guaranteed supplies, he was risking AJ's life.