I like how Tenma thinks a knife in her purse will be enough. She's a very petite, small woman. If they didn't cut out scenes with women attempting to stab/slash with knives from
Surviving Edged Weapons, we'd see how poorly they fare.
Half-Gypsy needs a
gun. A .45 would probably be unrealistic for any of these girls (Sleepy is a different story), but there's probably a good number of 9 mm. CCW out there for petite frames and tiny hands..