First check your spam folder to see if the email, although in your outbox, got bounced back for some reason. If not, then politley send another email stating that the message you originally sent was in your outbox (and forward that to her) so you thought she had recieved it, that you'll be glad to resend it.
NEVER call someone at home unless they tell you it's okay. ALWAYS address them in email and in person professionally, dr. x, dear professor x, always end emails with thank you, etc. AWAYS take the submissive, student role especially with people like this. Bottom line is she has the power to fail you.
I too have had instructors that for no reason made life hell, simply because they have the power over you and they like to abuse it. Be prepared to apologise, take the fault, whatever you have to do in order to set things right, feed the maniac's ego and get the heck out of there with your degree.
At least your preceptor is backing you. Ask the professor if she can clarify by how your unprofessional so that you can make a conscious effort to change. Something like, Professor X, it would provide me with such benefit if I could gain some insight on to how my performance is unprofessional. This is certainly not my intent and if I am unprofessional in any way your advice at how to correct this would be appreciated. So you feed her ego, make yourself seem open to criticism and change, that you care, etc. People like this thrive off this stuff and most likely she'll get off your back.
I feel for ya. Just do what you have to to move on. Fighting only makes it worse with people like this.