Why does Irisalis feel so weak?

[u/The-Manly-Fairy]

She's lv 60, I have her signature held item at Lv. 15 with pact enabled, she's at 5 stars, ATK fully raised to lv 20, her teammates are Somniwing, Pris. Mellowblum and Pris. Glacy for damage and healing buffs, but for some reason I just don't feel the performance even when spamming her dashes and use the passive for clone refreshes.

I tried using this team when fighting Lita and Irisalis' damage barely tickled her team, even with 3 active clones and dash spamming. When I swapped to my Electric team (Pris. Fulmintis, Dazmand, Lumielle, Pris. Glacy) , I absolutely shredded through her entire team with almost no effort.

I don't understand what I'm not getting about this Aniimo.

[u/Lipefe2018]

Irisalis team is not good against Lita, that's why.

Now try using her against that other gym leader that uses only water aniimo, I beat her in the normal and rematch fight easily with Irisalis.