your boss is tough? Work hard, keep doing what you’re doing, be her friend, and someday you’ll be the boss. Her job is to get the most out of you and your job is to give your best.
I’m not gonna pander to ya here. If you quit because she’s tough on you, you could regret it. Having a job and company you love with a tough boss is way better than a boss you like in a job/company you hate.