Also the Kiki on the fair difficulty only spams light attack and it gets extremly annoying
Viewing post in Super Tilt Bro. for NES comments
Easy and Fair AI are actually the same code than Hard AI with longer reaction time. I guess you run toward Kiki, so the time she take a decision, you are so close she can only jab.
Improving AI is on the plan. Notably for Kiki who may benefit a lot from using her specials more. It will come in quite some time though (I am currently working on a new character and an arcade mode.)
In the mean time you may try to jump more against her, forcing her to use aerials.