Well sometimes professors won't like you. I had one that didn't like me because she thought I asked too many questions. But who asks questions in school anyway? I passed with an A despite that. Why? Because I still got the work done and did what I knew I was supposed to do. Her feelings about me were the furthest thing from my mind.

You know why you are there and I am sure that you want to be there. But it's important to believe that you belong there. Do you not love the work you do? If you are helping your classmates you must already be proficient at this work. So you shouldn't let the things this person says get to you.

There are always going to be people that doubt you. And yes some of them will have masters degrees. But degrees teach us nothing of important qualities like tact, inspiration or compassion. I know it is difficult but you have to learn to stand up for yourself in these situations. I'm not condoning anything confrontational here but avoiding this will not help unless you decide to switch professors. Otherwise this may continue.

I agree with Bonnie that this may well be her projecting something upon you. It has been my experience that people that were quiet in their youth but gain social skills later in life hold self-hatred for that part of their past. They tend to get angry with people that remind them of that past self. I am not saying that this teacher is like that - but I ran into that a lot when I was younger.

So I advise you to be the adult here and take some time on the side and talk to HER! Let her know that while you appreciate her trying to help you that her method of giving advice is insulting to you. And let her know that you were insulted by her putting you out there in class. You have to start speaking up for yourself - that is one thing she is right about. It's just that her message was wrapped in BS and no one wants to touch that.

There is a very small chance that she really is trying to help you but she's letting her emotions get in the way of the actual message. Miscommunication like this is why it's always important to be civil and to not simply rush in angrily to solve such problems. Be kind but be firm in your beliefs.

I hope everything goes well.