I have also been watching this thread. If you are able to spend time with your friend apart from Sarah, then that would be ideal. If you can't, then you may not be able to continue this friendship.

Also, it appears that your friend has changed since her friendship with Sarah, according to your account. She may like Sarah's qualities, even though you do not like them. So it may be that you two have grown apart.

It sounds like it is unlikely that your friend is going to change back into the person you knew pre-Sarah.

Also, it sounds like you are very uncomfortable with Sarah's opinions. You say that if you say positive things about your own profession, that she will dislike this because according to her, her profession is the best. My question is, why let this bother you? You need to be comfortable with the fact that you will not always agree with others or like the same things as others. And this is perfectly okay. Voice what you feel about your opinions, if her opinion is different, then that is her opinion and you need not let it affect you. You are entitled to your opinion just as much as she is entitled to hers.

I think you could salvage this relationship if you could be comfortable with disagreeing with others. However, if it is too uncomfortable for you to own your own likes and dislikes, then maybe it is best to not stress yourself with a relationship with people who may not always agree with you in every way.

Seesaw