Actually sneha i think she doesnot feel having child is big thing. But she is hurt because he hidden it from her. It looks both sorted it out which is not shown in the show.
Rest Arhaan using her savings and his GF put case on him are out side news which no one in the house knows. And we are not even sure if Arhaan using her savings as Rashmi gave her power of attorney is true or rumors.
So i tried to hate her for accepting Arhaan so easily then felt they might have sorted it out as Arhaan didnot cheat on her with other girl but hide half information.
If what Arhaan said is true that he helped Rashmi to bounce back then definitely rashmi has lot of gratitude and love towards Arhaan. We always lean on people who helped us when we are in lot of troubles.
Again Arhaan conversation with shefali didnot look like Arhaan is mocking rashmi like it was looking in the precap. But i felt he genuinely telling shefali how they met and how their relationship developed and how he is their with her when she has nothing...
Yes, you are right. And She does feel a lot of gratitude for him.
It's easy to judge someone sitting at home , but we don't know what is their story and background.
She is wise enough to take her own decision.