dont know whats going on? missed episodes

idk what happened after that - saw a glimpse oher living in sharma house but what i dont understand is why does her mom not like her anymore

and how do they know shes indira?

did rishi and zara get married? saw a glimpse of that - but the mom was switiching the brides- who was she switching taking out zara to put indira or taking out indira to put zara? and was she successful? or was the bride really zara when they thought she was indira so they took her our to put indira who they thought was zara

sorry um confused

please tell me what has happened and why

thank you!