I agree. She told him after that silk dress incident that the next time he blames her she wouldn't be back. And alas, she's not coming back. He has yet to ask her back, let alone apologize. He needs to do both.
And mixed in with this is the fact that I don't think she's completely unaware of what's going on between the two of them. She is getting mixed signals, is confused, hurt and is also somewhat aware of KT's feelings.
Sonal had told her back at Holi that she observed that Kabir was attracted to her. And somewhere even she knows that her acts to annoy Sonal also affected KT. She mentioned to herself and Gunjan how she feels sorry for doing this. In fact it was after the dress incident she said she was leaving that plan. And she did.
In short I think there may be quite a few factors that play into this.
@Kahlu, what was message on the front of the card? I read if you handle it well, it will last a lifetime. But there is more written underneath, but Zee has an ad which blocks that part.
Speaking of which, KT needs to be careful. Sending flowers to her house. What if her aunt received the delivery? Okay the first time, it can be explained away as an apology and appreciation. But after that...