Why does my mom hate me so much?

Some parents tend to do that. Now that you're 25, you're old enough and you should know this. I know a person who has never treated her kids properly, and ruined their education and career. She didn't do any of that intentionally. But being not intentional doesn't make a difference, though. What I'm coming to say is that, you've to make a practical approach. Watch her mood and mood swings. When you feel that she's unusually happy, just go ask her. Have a serious conversation with her. Tell her how bad you've felt for each situation ever since your childhood. That should help at least a little. If it didn't work out as expected, you don't need to be worried, because she'll eventually understand it one day.