When these two women come to know that savita came to know their secret...it was Mandira who planned to kill Savita and at that time Meera was not a criminal....she was scared about this and it was Mandira's men who did the accident.Now they r showing as if Meera is the whole cuplrit..and yesterday she even said that she killed Savita...and she can even kill karan..that too she said this to Mandira.
I think the story writers make up day to day story..and as per the demand and requirement they make necessary changes..they dont care even if it contradicts.