@Bonny guarantee she got a call from a guy and dropped what she was doing to “chill” with him. She drops off the planet when a boy pays attention to her. Regardless of plans
It's annoying to me when people flake on plans. But you said she's over all the time. I would just wait for another night or if you had your heart set on a drink go buy something.
Let it go. If it didn't work out, you can drink together another night. It's nice that you're together so often that you have a system. Hopefully, she stumbles in as you're reading this with a great story about what took so long.... 🙂