Question: Should one comfort a mourner when he enters shul on Friday night?
Short Answer: There is a custom for the minyan to comfort the mourner when he arrives in shul before the onset of Shabbos on Friday night. Some even allow such comforting on Shabbos itself.
Question: May an aveil who is sitting shiv’ah in the house of the deceased (or of another aveil) return to his own home at night to sleep? May he attend shul if there is no minyan at the beis aveil?
Question: Should a burial be delayed more than one day in order to enable a close relative to attend the burial?
Short Answer: A burial should not be delayed even until the night or next day. However, many poskim allow delaying a burial less than 24 hours in order to enable additional relatives to attend.