Aisuru, as I have confirmed in other stories and previously in this book, is the daughter of Shanks, so naturally, she has very strong Haki all 3 types in fact.

However, they awaken one by one. This, along with how she hasn't gained full control over her devil fruit until after the two year skip, causes a heavy imbalance with in Aisuru. This imbalance is actually the key to her Berserk Mode and mild psychopathic tendencies pre-timeskip.

After the two years of hard training, Aisuru awakens all 3 Haki, learns to control them, gains control over her devil fruit powers, and the imbalance is stabilized with the mastery of her devil fruit powers.

This also affects Aisuru's voice. In pre-timeskip, Aisuru's voice is a very high pitch. Similar to that of Ruby Rose from RWBY. In post-timeskip, her voice is still a high pitch, however it is more mature and a bit smoother. I honestly don't have a voice to compare it to at this moment. Probably close to Kagome from Inuyasha or maybe Lisanna from Fairy Tail.

Because of the changes in physical appearence (hair now reaches her shoulders and she actually has a burn scar along her collarbone and a bit of her neck) and the additional change of voice, Ki doesn't recognize Aisuru at all upon first reuniting. Aisuru had to change in to her fox form to make her believe it's her.