MK
This is Kawaguchi Hidetoshi. This is a humble answer to the question.
I was really concerned about my wife's religious issues. I think it's better to take time and aim for a solution without being impatient.
Regarding the “ancestral memorial service,” MK probably noticed something, and I think it doesn't matter to some extent.
However, the original “memorial service” in Buddhism is “offering offerings such as incense, flowers, lights, food and drink from the heart to Buddha, Bodhisattva, the heavens, etc.,” and is performed to express devotion to the Buddha, Bosatsu, Myō, and the heavens, who are treated as Buddhism and can save sentient beings in distress due to their precious wisdom and compassion.
http://ja.wikipedia.org/wiki/供養
Since ancient times, due to indigenous ancestor worship, or the influence of Confucianism and Taoism, etc., it is thought that worship and worship began to be carried out by our ancestors as people who could protect us, giving us a position of rank like the heavens.
Simply put, it can be inferred from the place where ancestors who have passed away are called “hotoke-sama” or “kami-sama.”
http://ja.wikipedia.org/wiki/祖先崇拝
From here on, it's my humble opinion, but if your ancestors can immediately become beings called Nyorai, Bosatsu, Myoo, and Shoten in the next life after death... of course, if they have accumulated sufficient wisdom and compassion exercises, are at a point where ignorance, worries, bad work, and even those habits can be eliminated in the next life, and are surely able to move towards the realm of enlightenment and nirvana, then it will eventually become possible... the judgment here will eventually become possible... the judgment here is whether various difficult issues are ahead I know it.
I am also dealing with the idea of “chasing good fortune” in the column below, but I think it is essential to exert our good deeds (chase, conversion) so that those who have passed away can go to enlightenment and nirvana without struggling in the reincarnation world, so that even a small amount of help in Buddhist practice (ignorance, worry, bad work, elimination of those habits) is essential.
Column “On the way of thinking about memorial services and merit conversion” 1-5
http://blog.livedoor.jp/hidetoshi1/archives/52108201.html
Kawaguchi Hidetoshi Gassho