The first year ( and sometimes more) is brutal.
Just one person can make you doubt your own worth, even if you are doing perfectly fine.
Yelling down a hallway is rude behavior except in a life threatening emergency,
If you don't respond, folks need to assume you are occupied, not that you are goofing off. Take a message, or walk up politely and interrupt. I see that situation as her mistake, not yours.
If you are depressed you need to speak to a physician. And most first year nurses could really, really use a therapist. Get someone you can unload on.
Your coworkers could have been saying "she's the new grad that dealt with that burned toddler, and got the parents to be honest" in other words you did well, and their expression is about the situation, not you. Don't assume the worst of them!
I think you are probably doing an exceptional job, and it will get easier with time (and some coaching for that ward clerk) but if you need to go elsewhere, be proud of yourself for recognizing what you need. It's not failure, it's just moving on with your life.