Because Maan tolerated all her faults and flaws up until today, and he stood by her no matter what (may be with anger or with a laugh, or may be was really concerned) , but now without her fault (all because of Maan, who can't control his emotions) he is acting so rude and letting her go.........
(of course this will led to where Maan will realize what he is missing, and May be Geet will realize her feeling for him too)
So basically I don't won't Geet to keep quiet, she should stand for her right, and then should leave.
474