First of all, I admit that I have dabbled in some religious elements and have been exposed to fortune telling and other numerology. I think this question, you think about what your mother did and how her mother came into contact with "believing in God" at that time. Then what kind of behavior. Do you blindly seek immortality and divination, spend a lot of money, or do you really have true faith? According to what you said, it seems to be inclined to the former. If a person is really stubborn, I'm afraid simple reasoning is difficult to get results. If you confront your mother, it will be a test of family relations. It is really a pity that the family is not harmonious.
True religion does not encourage people's selfishness. Of course, it does not rule out that the people who initially intervened were selfish. As far as your mother is concerned, she has a reverence for the "Buddha", but she is afraid to grasp the correct belief. At this time, we might as well use correct beliefs to motivate and correct it. Isn't she a Buddhist? You might as well have a certain understanding of Buddhism, and then inspire your mother with correct Buddhism. In modern China, people's beliefs have been generally out of shape, including many phenomena inferior to the law in religious groups. It can even be said that quite a few people's so-called beliefs are selfish and impure. Therefore, the so-called evil spirits and good luck will flourish. True religious belief is science, not superstition. Some great scientists in the world often have religious beliefs. As a scholar, you should probably know that. Advocating science is a belief in itself. Ignorance of science and blind belief in scientific achievements are also superstitions. Today's environmental pollution, diseases and so on are the consequences of superstitious science, which must be admitted. Therefore, first of all, we must correct our own hearts and treat our beliefs correctly. The mentality of praying to God and worshipping Buddha is actually the same as the mentality of spending money to find a stable job, both of which are to find a sustenance for life. This has nothing to do with education. We all use the so-called scientific truth to convince your mother, and I'm afraid she may not turn around from her heart. Therefore, the so-called science still needs faith. If you don't believe it, "science" can't help it. This is the so-called "where is the letter, where is the unbelief." ...
You can ask your mother what the purpose of the goddess is. Find out exactly what she wants her to be so obsessed with. Also, you should know what your mother's normal life is like. What is her outlook on life, values, etc. You might as well communicate with her more. Your expression only describes her behavior of asking God for advice, so you can't grasp what kind of state your mother believes. She is not interested in what you are interested in. She is interested, but you are not. So how do you communicate with each other? How do you imagine your mother? So you might as well dabble in what she is interested in first. Of course, this is not to encourage you to do things that confuse Machamp. As a scholar, you might as well dabble in the literature about religion. China people have many concepts of Buddhism in their folk beliefs. You might as well learn about Buddhism first. Other religions are acceptable for your convenience. At least to find common interests with your mother. Buddhism (religion) is definitely not a "smoky" state. If you know something about Buddhism, you can influence your mother with real truth when you encounter some illegal behaviors. In particular, the "cause and effect" of Buddhism is very interesting, which is also objectively judged in the scientific community. The reasons of "blessing" and "curse" are analyzed. How to seek "happiness" and how to avoid "disaster" are reasonable. This is a topic that many people are interested in. The real scientific community actually has considerable analysis and even related experiments on some so-called "hanging" phenomena. Therefore, since you are a scholar, you'd better be tolerant of knowledge. You should set foot in your mother's field of interest first. If you are knowledgeable, your mother will naturally move closer to you. Of course, as long as you are not crooked. You can learn about Buddhist practice. However, my personal suggestion is that the literature on religious history is generally weak, and if the author is not a practitioner, it is often not objective. Bills such as the Religious Law Society are too suspended and ethereal for you. Therefore, I suggest that you contact more Buddhist literature, including online literature on practice, including videos and so on. If a witch can cheat your mother. You won't lie to your mother, that's for sure. Buddhism, Christianity and other true religious principles do not encourage people to seek God's help all the time.