Confused with "Let me know when..." I texted my friend (non native) "let me know when you are leaving school" Then she got me right back "I'll leave at 4." However I wanted her to text me say, "I am leaving!" when she was leaving, not to inform me the time she thought she would leave when we were chatting ... How could I make myself clear for that? If you got a text saying "let me know when you are leaving" what would you do? I am not complaining about the way she replied. It was around 2 when I texted her and too early for the time we decided to leave school together (around 4). And I wanted her to tell me the fact she was leaving when she was leaving so that I could see her...