Holy cow! You sold your house in one weekend? I am super-de-duper jealous. I thought we were beyond lucky to sell our house in 2 months.
Now, just so we're clear with everyone reading, this is a special circumstance. This is not the preferred way to resign from a position. Although, I will admit that I once quit via e-mail. I know, I know. Tacky. My boss was in a different office and I kept calling and getting his voice mail and I certainly didn't want to leave a message saying, "I quit!"
Since you are on good terms with your boss, let's do everything to keep it that way--especially since you'll need a reference. (Assuming you'll be looking for a new job.) Here are my recommendations:
- Phone calls are more personal than e-mails, so call
- Apologize profusely for doing it over the phone
- Tell her why you are leaving, how much you enjoyed working for her, and how you learned a lot
- Explain about the unexpected house sale and apologize again for the short notice
- Still write a formal resignation letter, sign it, and give it to her after the fact. You can send a copy via e-mail, after the phone conversation.
When I quit my last job, I told my boss as soon as my husband had a verbal job offer. I told her there was a 90% chance I would be leaving and gave her tentative dates. I then helped figure out what the department's options were for replacing me, gave my opinion on internal candidates and did what I could to help. My boss was extremely understanding, but she's always been a great boss. (And for the record, her boss was understanding as well. I actually left the best job on the planet. What was I thinking? Oh yes, chocolate. I was thinking about chocolate.)
Good luck with your move! And with quitting your job. it's actually a difficult thing to do when you like the people you work for and with.