Ip section 304b and 498

sad for your sister.

The opposite counsel may augur/try to prove that it is not neither dowry related death nor culpable homicide but a suicide owing to her personal reasons and if he succeeds in convincing the judge he may get conditional bail with stringent conditions imposed

Regrarding the custody of the baby child, the case will be a long drawn one and in my opinion will stay with your sister's brother in law or brother in law.

if they are unable to get bail you can move for custody application.   It may take time.

you asked

"How long they will not get bail and will remain in jail in this case."

sorry this question can be replied by an astrologer as law has no clear provision in this regard.

good point from Mr.Sudhir Kumar. Your onus should not be on how long you can deny them bail but how you can prosecute them for their misdeeds.

regarding custody of the baby I still opine ,it will be a long drawn battle and will stay put where he is initially is  in the absence of his mother.

Adooption is impossible, because father's consent is required, which you can't get.  If you want custody, you have to file custody case.  Whether you should file custody case or wait for them to file custody case can be advised by knowing full facts, i.e., their attitude and behaviour etc.  Till, investigation is not completed, in those cases bail won't be available to the husband and in-laws may get bail earlier to husband being old in age.  Every thing depends upon the charge sheet and the Section 161 statements and medical reports decide how the judge will tilt in respect of bail.

As long as the father is alive, he would have the first right on having the custody of the child. As his brother and brother's wife are looking after the child, you may approach the court for the custody of the child, but it does not seem likely that the court would disturb the custody of the child as of now.

How long would it take for them to get bail? They may start the process as and when the charge sheet is filed, how long would it take to get the bail would depend on many factors, including the material on charge sheet.

adoption of sisters child (by brother)  may otherwise not be easy.  You cannot adopt the child of someone whom you could have never been able to marry.

Try moving a custody application.