Does this embarrassing interview mistake make me unprofessional?
I can't tell if I totally blew this job opportunity. For context: I'm a recent college graduate applying for research positions. When my last interviewer reached out to me, she introduced herself by her first name and signed off with only her first name. In my response, I addressed her by her first name. When we spoke over the phone, she seemed put off and re-introduced herself as "Dr. _____." I corrected myself immediately and have only referred to her with her professional title since.
Despite my slip-up and my correction, she asked me if I was prepared to work in a professional environment. Even my references told me that she asked if I was "professional."
Does my mistake automatically make me unprofessional? How can I address this slip-up?