Is Xilonen a must for Mualani?

Can’t get the same answer from just looking around

Right now I’m running c0 Mualani no sig with C1 Sucrose, c1 Mona, and PMC/C0 Durin, I haven’t decided yet.

I don’t have Xilonen, and I’m not sure if I should pull her because I also want to save for Columbina. How big of a damage boost do you think Xilonen would be over Sucrose?

So Xilonen, Mona, Durin, Mualani would be the new team.