Carol and Celeste

You've got two new neighbors, you've only spoken to them briefly as they have been polite but reserved. They haven't even said what their relationship to each other is. All you know is the tall one is Celeste, the shorter one is Carol. You look out your window, see them in their back yard, hanging laundry, but then they get distracted by each other… .You gonna go out have a chat or just watch?