I play badminton with my roommate Scott regularly in a nearby court. Sometimes he brings his office colleagues to play. One of his friend Amy joins us from time to time. I would say I don't know her too well and have always considered her as a friend of friend. Recently I went to watch a movie with Scott and Amy. While returning I stopped to buy cigarettes. Seeing this Amy started acting all weird and said she is very disappointed in me and will not be talking to me until I quit smoking .
I totally appreciate her concern and am myself planning to quit but her actions have left me puzzled. We weren't talking a lot in the first place, just formal Hi hello, so her not talking to me wouldn't have mattered. But her actually saying this have affected me in some way. I initiated a text to talk about all of this, she texted me back by setting deadlines for me to quit.
My question : How should I convey that her saying something like this is totally inappropriate and have unsettled me. And I would quit smoking on my own timeline and don't need the incentive of talking to her be the reason for my quitting.