I don't think they rushed to wedding.
A was pushed into arelationship when she was not ready for it.
A is not the kind who would fall in love and then start caring.
A needs to be in the situation to start loving.
That's why she was married off.Slowly when she started seeing S instead of J as her husband and then fell in love with him.
She did not have anything to do with things that reminded her of Jagya but S slowly introduced all those things again one by one.First she rejected them then she accepted them but was bothered by those memories and then she still had memories of J but they did not bother she fell in love and finally she sees only Shivji and no Jagya there.
But she still needs to cross that final barrier.Probably she will be bothered but her love will help her.
For her it is not about falling in love it is about moving on in life.Only after she moved on did she fall in love.S was there to help her to move on in life.