Jess actually have Kara on speed dial and call her when Lena is about to get overstressed.
So like all these headcanons about Lena and Alex having all these codes and plans for when Kara has a rough day - Jess and Kara do the same thing for Lena!
Some douchebag investor says something to Lena about her family and upsets her? Jess texts Kara.
Lena refusing to take a lunch break because she’s a work-a-holic? Jess texts Kara.
And if Kara thinks that Lena needs a few more hours of sleep because she worked to hard the night before? She totally texts Jess and gets her to re-arrange Lena’s schedule!
The two get especially close during the wedding planning, because Lena had a little run of Bridezilla there for a minute, and they had to make extra sure that she didn’t lose it!