animations and voice acting of beating, raping and killing women
So raping women in video games is cause for alarm, but all the men that get beaten, tortured and killed, often brutally, is just business as usual, yes?
What's so special about rape to single it out? Yes, it's a horrible crime. So is cutting off someones hands, for example, which was common practice in several african civil wars. Make a Google search if you want to see pictures that you will never forget in your life.
that game companies are acting irresponsibly by selling a product that stimulates the gamers in an unhealthy way.
That's just the old "violent games turn players into killers" argument, re-hashed. It wasn't true then, it isn't true now.
but it's not hard to believe that lone straight men are prone to breeding hatred for women
Actually, it is hard to believe. All the lone straight men I know are either terrified of women (the geek stereotype) or longing for a woman (the more mainstream type). Men who hate women exist, but so do women who hate men and if you claim either of those has anything whatsoever to do with video games, the burden of proof lies with you.
Regardless of whether that's true or not, that's her opinion and I think she should be able to say it without fear.
As the famous quote goes: You are entitled to your own opinion, but you are not entitled to your own facts.
Parts of these claims can be checked for and verified or falsified. So far, research has shown that this "behaviour shown in books/movies/games (pick, depending on the century you were born in) translates into thinking and/or behaviour in the real world" is at best a long shot.
The fact that I'm posting as AC shows that this is about freedom.
No, it shows that you're a coward. Freedom is this thing you occasionally have to defend, even if it means a bit of discomfort to you. People died to establish this freedom for us, the least we can do to respect that is to use it without fear.