The idea is u win some..u lose some. Difference between two people can be judged only by analysing their behaviour after a victory or a loss. CVs trying to show how desperate Ish is getting to ensure she remains at top position in Dev's life.
Ish is competing with Sona which offcourse Ish wud nvr agree to. Sona won one round when Dev called Asha ma..Ish lost n heard Mumma boy comment but being a sore loser came up with a speech n Dev's affection infront of whole gathering shifted to Ish. Sona lost this time but understood Ish's emotion n hugged them without any malice .
Ish took it as a victory but clearly hated that Dev hugged both of them together giving somewhat equal status to Sona. So Ish decided to test Dev's loyalty infront of everyone by ordering him not to eat icecream..But Dev refused openly, Ish lost but got a chance to blame Sona when Dev was ill or Sona fell asleep or cold shower. Then Sona won but she talked abt it with Dev..but Ish again made them emotional so tht he can sing bhajan for Goddess.
When Sona wins or loses she doesn't even gets affected by it...all she cares abt is Dev's happiness but Ish always has to win n that too infront of everyone. She needs frequent assurance from Dev that she is d most imp person in Dev's life. If Dev doesn't say the right word or doesn't do as per Ish's command..she uses all her weapons in her arsenal to make Dev feel guilty.