The "shop window" in this instance was referring to their website - which is probably e-commerce given that they are a fashion retailer. An e-commerce website is a your online store open 24/7, 365 days a year. They were asking your opinion on their website and as a digital marketeer you should have known this. It's all in the context.
Honestly? I hadn't even looked - could tell you everything about the website, but not the store window!