Returning Player - Weapon advice

I am currently returning from a long and on and off break, spanning from Yinlin to Shorekeeper and retuning for Camellya.

As of right now I’m guarenteed on her banner and at 44 pity as well with having 40ish pity on the weapon banner.

I am doing as much as I can to grind out my map and quests to get Camellya, but wanted to know if her weapon is a must have. So far I have the option to claim the standard banner sword, but I wasn’t sure if it is worth while for her.

What I want to know is if there is a 4 star weapon that is good for Camellya or is she too reliant on her signature?