I think she’s not that far along yet and just wants a rough shell measurement to continue fiddling with the kitchen. Instead of throwing her a few simple tips, there are only dumb requests like “give me everything you have, even though you basically should already know everything.”
- if the floor plan was finished, she wouldn’t need a measurement...
- without a floor plan including windows, the kitchen planning can’t possibly be finished yet...
So: kitchen furniture is normally always 60 cm wide. In the end, you need a filler piece on the wall side, which is fiddled in during installation so that the appliances definitely fit. A typical floor-to-ceiling window that opens outward is about 80 cm wide. We don’t have such a window, so unfortunately I can’t give you an exact measurement there. The neighbors all have about such a window.
Tip: Ikea kitchen planner. As said, these cabinets, end elements, etc. are largely standardized. There you can roughly plan your kitchen, add the window, and you’ll know how long the wall must be. You can also go to the kitchen studio, but they rarely have paper with them there.