LOL just havin' her worried ass peering around a corner to make ABSOLUTELY DEAD ASS CERTAIN THEY AREN'T KISSING XD She gets Bolin to handcuff Mako and Korra to opposite sides of the room.

All depends on our route, but I always saw Asami being forced to take the last two bending vaccines by force, whether by Mako in serious danger or someone else at risk, like the airbending kids. There may also be some manner of controlling Asami being put into them too if she became disloyal, like certain key words they program so she executes orders without argument. Turns Asami against Mako :O nuuuuuuu~