I’d leave a written note with your name, signature, and partner numbers on their desk/taped to computer etc.

Edit: include the specific date of your last day of work you plan on working

you can always call the store or email the store. or even better just let the supervisor on duty when you work next that you’re putting in your two weeks so they can write it down or relay it to her lol

Text her. There’s nothing wrong with resigning over text. Just mention you can never reach her. OR you can write her a resignation letter and leave it in her box so that she sees it next time she goes in.

Inform your SSV, leave written notice for your manager, follow up by email or text. Don’t be scared it’s Starbucks turnover is a basic thing.

Email, that way there's a paper trail of when you put it in and when you last day is.

Just text her. Its what I did. Left my shift, pulled out my phone and was like "Yep, I'm out. See ya never."

I left a letter on the desk sealed with her name on it. So well see how it goes. It stated my last day of employment and I dated and signed it for today.

You can try to transfer to a closer store first