This video shows you she can activate the bleeding skill by a frame grenade and killed one warden and two paunser within 5 secs!
And another one shows you she can activate it by a torque bow.
As you can see in these videos, you can bleed enemies with these weapons if Grace wield a mace.
You may feel it’s harder than firing the JD’s lancer GL or Kate’s shotguns because you must need to change your weapon to a mace every time before an enemy get damage from her. but she is still a handy character!
It seems this technique is a glitch, but I don’t think the developer would fix this because Grace is a paid character imao. She could be an op character in the both of escape and horde modes if she has a chance to get a mace!
thank you for looking at this. and please spread it! thanks