kannan GETTING so over

Y the hell is kannan getting so over, and saying bad things abt kashish, y they don't realize now after knowing everything that kashish engaged akshat was a drama, and when ever mehak comes, more than charu, kannan is making faces, she has no scope in the serial, choti si kahin ki...if she is thinking abt charu, then kashish is also hher sister., and she is more sad than her.....
u say?