She loved Armaan but felt betrayed due to a misunderstanding. When it was cleared away she went mad searching for him but lost. She gave in to marrying Sid but her heart was killing her so she tried to commit suicide. When she woke up she started thinking with her brain and decided to let Armaan go which seemed like a lost cause in all honesty. Finally her brain and heart started to work together as she started to care for Sid. Now Armaan is back and turned everything upside down. Now not only is her heart in turmoil but so is her brain.
I know it sounds weird but it happens. People get confused in real life too. I know I have been confused.