Before we begin.
Kiana has teleportation to avoid attacks and portals to reflect attacks, BFR to Img Space/SoQ and Honkai corruption that can incapacitate Ronova with madness, perception, and cm hax, which Kiana tends to use in-character
Ronova has AE1, which stops most of Kiana's attacks and physical hax, HDE, and AP/Absorption/Curse that can oneshot Kiana, which I will assume she uses in-character.