They did for you, now you do for them. Make sure you complete all the ceremonies with utmost devotion so that they have no trouble in the afterlife, in the parallel universe. A pandit for death ceremony can help you pass through this difficult time. Not just rituals, you can even have a Garuda Purana Katha path conducted at your home. The legends over there will help you know about the afterlife and boost your morality. They did for you, now you do for them. Make sure you complete all the ceremonies with utmost devotion so that they have no trouble in the afterlife, in the parallel universe. A pandit for death ceremony can help you pass through this difficult time. Not just rituals, you can even have a Garuda Purana Katha path conducted at your home. The legends over there will help you know about the afterlife and boost your morality.