Is that really a notable underrepresentation? Every time the question of gender and violence and crime stats shows up, people act like women being violent is an extreme rarity that is simply not a common reality of crime, but that's not really what shows up in actual stats. Searching for statistics on non-sexual assault is surprisingly hard, since every search for "assault" stats just defaults to sexual assault, and with homicide data being much easier to find, people just assume those are the stats for violent crime in general, when they absolutely aren't. Violent crime that doesn't end in a murder is also multiple orders of magnitude more common than the alternative, so it's honestly a better metric to use as regards to ordinary people's experiences.