Lots of guys throw **** becasue it is anti social, its even worse over here, becasue to do it, people have their windows down, often in the rain, so its mroe to draw attention and show how insecure they relly are.
You asked her if she wanted to grab coffee. Then you asked if the time worked. Then you asked if the place was okay. Then you asked if she'd prefer tea.
Four questions. Four chances for her to say no. Four signals that you're terrified of making a decision.
Plan it. Pick the place. Pick the time. Tell her where to meet you. She'll either show up or she won't.
Either way, you look like a man instead of a scared little boy.