Wife beating

FIR has been registered hence you may wait for the police to take further action on this.

You will have to wait for investigation by police.

The facts posted are vague and incomplete, you may clarify 

i) what is the relation of accused with victim, wherein you have stated "husband's brother in-law" beat wife......." 

ii) you have stated, inter alia, that, "FIR filed not taken......) what do you intend to communicate with the facts of the case ?

FIR filed no SCR given, there is no progress made by the police. The accused is her husband's sister's husband 

You cannot be impatient about it, the working of police is very well known hence you may have to adopt patience in this regard.

He had beaten his wife and a complaint has been registered, if at all the beating is continuing till now then let she go and sit before the superintendent of police demand his intervention and protection. 

As the Central Government standing counsel in the Madras High Court, you should be in the know of the remedies.

Strange relation to beat a lady,  where you have stated qua relation of victim with accused  is "The accused is her husband's sister's husband". 

How and why does husband of victim allow his brother in-law to assault his wife and  why did she not retaliate and give the assailant befitting response ?????