I won't say Gizelle is an angel. And I didn't particularly like how she too stooped down to fighting using with hands like Dimpy. But she does seem
to be the better person because atleast she took the initiative of feeding Dimpy the kheer and apologizing to Debina about her behaviour in her house.
And although Dimpy was the one mostly instigating Gizelle, I don't think Debina is completely blameless in this regard. She was supporting her friend who was wrong and kept saying Gizelle is being rude and expected Gizelle to go and apologize, etc.
Anyways whatever it is, they all three are celebrities and just by seeing them in the show we cannot judge who is an angel and who is not since we do not know them personally.