They would have fled seeing the police , just the way Sarita's in laws were not tracable
One thing would have happened then also, Anandi bashing would have continued the way it is going on.
We have seen in news papers also, Child marriage in maximum cases have to be stopped when it is happening., otherwise it becomes difficult later on o prove. Whole village lies as if nothing happened. Had Sarita taken her later on they would have proved her mentally ill or something just to prove nothing happened or fled away.
It was easy in Urmi's case as there was proof of the marriage. If she knew about Urmi's marriage at the time when it was happening she would have gone there to stop it.
No mothers harms her kid intentionally