Maybe it's because overwhelmingly these women were defending themselves and the men were not, or they were actually mentally ill. As already stipulated, up to 90% of women in prison are there for harming a man who had been abusing them. The same cannot be said of men in prison. 35% of all women murdered in America are killed by current or former intimate partners, where only 6% of men are. Without details of each and every one of those cases, your statistics are essentially meaningless and are a shining example of how facts not given in context can skew perception.

Female Murder Victims and Victim-Offender Relationship, 2021