>>544780820
Cassius and Nia are pretty good with her so if you have either try them as they can discard the bullets.
Dirge bullets aren't exhausted straight away so you can exploit that to use discard effects without drawbacks.
As for Partners you can buy them from the DNA shop things
>but I can buy summons!
Yes but it's 10 per summon, 300 per partner and 400 per dupes (with a max of 2 dupes per character)
That means in what you'd buy 30 summons you can buy a partner. Better than trying and rolling if you ask me.