The chiding (albeit soft one) she gave to her daughter was long due. Dharmi always manipulated them using her divorce due to being poor.
But her behaviour today made her mom realize to an extent that she is not being considerate or aware of her parent's situation.
In her place, Aru would have tried to get married in what her parent's could afford to spare their feelings but Dharmi is Dharmi.
Remember that greedy glow on her face when she saw those huge gold kangans she got from Raami ben.