No, maybe it's best she does this in front of Mako and Asami too. It's a little too soon for her to fully apologize for the kiss, but she'll admit to her shortcomings as a friend and promise she'll do better by them. After a certain point she will then confront the kiss with Mako to Asami and Bolin both, and Mako and her can work on some closure about it, accepting that they were both just horny teenagers who were too blind to see what was right in front of them the entire time.