importance of certain times

I had fight with one of my friends some days back. We had decided to meet on some particular day. She called up that day to say that we will meet the next day. Somehow I insisted we meet on the same day. I strongly felt like seeing her so I insisted we meet on the same day. She dropped plan of meeting me because of her other priority tasks. I felt the priority tasks were actually sub-priority tasks and I told her so. She didn't seem to like that ( I wouldn't have liked too).

If one sees logically, I might be wrong in this case, and may be I am. How can I define priority tasks for her? But, I have habit of expecting certain things in certain ways from my friends - and I follow those. For example, I get upset if some of my friends misses my call and doesn't care to call back within sufficient amount of time. Regarding conversations with close friends, I feel sometimes the particular time has to be respected for that particular conversations. Obviously, these are not where-about type of conversations. It could either be some type of intense experience sharing, something discovered or similar. I feel, once the time is missed, the zeal of that thing goes away. Sometimes the experiences are so intense, that you can't have the same conversation at some later moment.

Probably I need to re-define the importance of time in such cases.