Has my mom emotionally abused me?

I've had a rough relationship with my mom, especially recently.
For example, she earlier had a discussion about why I don't call her once a week, especially since she saw a graph showing that most college students at my college call their parents once a week (a friend most likely pointed it out to her). She threatened to cut off my tuition (even though my dad pays and he doesn't initiate contact with me at college) if I didn't talk to her more and acted really sweet to my brother when he was in the same room. She also called me "sick" when I joked that she wouldn't want to know what I did at parties. She doesn't understand that as she is chatty, I'm not that chatty when I text. But to be honest, I don't want to talk to my parents that much in college. I don't mind talking 5 minutes/week but she talks for a very long time (an hour) and I don't know what she would do if I told her not to talk that long.
During the summer, she was sick. I tried to take care of her (even though, I admit, I was a little lazy with chores) and she screamed that I was a bad daughter as I was outside and that she treated her mom better than I did.
She also said that my friend is prettier than I am.
She called me "Lyin Paige" because, I admit, that I did lie to her sometimes about where I would go since she would force me to go where she wanted me to go.

In the past, she said successful dinners are for people who actually become successful (hinting that I didn't have much motivation), she called me a loser (but apologized), and called me a witch.
I can't tell if she does some of this criticism on purpose or if she's just a bad parent. I want to cut off ties with her, despite the good moments we have together. But right now I can't since I'm not financially stable.

That's definitely emotional abuse. Your mother isn't good with respecting boundaries and neither is mine.