I agree with the adjustments in RP. It has to be realistic. If she wants to continue with that kind of RP, it has to be backed by an elaborate backstory in the character sheet. At least that's what I think should happen. 

Honestly, if I was carrying two pistols and a katana, I would find it hard to even run properly because of the weight alone. 

Also, doesn't matter if it's the third person with a katana, I guess. Almost everyone came with guns, no one's arguing about that.