If basically you become adult by shinobu power, you get lots of strenght without any training, maybe even haki, maybe even the skills of swordsmen who train their asses for many years and suddenly can face hybrid kaido like that, it doesn't make her power the most op ? She can just use it on luffy and 40's luffy will kick Kaido's ass lmao.
Hope oda not gonna give some bs PIS for momo!