LoFI does provide better Crit Value but less base ATK and it's passive is useless on Ayaka unless you want to build any EM on her (maybe in Rev. Melt/Burn Melt comps but otherwise not recommended).

MR gives relatively less CV but much more base ATK along with Elemental DMG%, and it's passive synergizes perfectly with Ayaka.

Remember Ayaka should be running 4pc BS and have a 2nd cryo in her team, so it's easy to over-cap on CR.

@/Squirrelloid Yes. This is the case for her preferred team comps i.e., Freeze and Mono Cryo teams.

With 4pc Blizzard and 2nd Cryo teammate, she potentially gets a +35% C.Rate bonus in Mono Cryo and +55% in Freeze.