I need urgent help (sensitive topics)

A family member in my house decided too contemplate and attempt too commit while everyone was away they got through the safe and locks… now there is a live ready too fire beretta xp storm 4 in my house and i have no idea how too uncock or resafety this firearm (i have currently got the person far away from the firearm) my parental figures are far away in another place and wont be coming back for awhile