Pressuring someone to invest in something or to invest in bitcoin is not a good idea at all because it is very risky. Let's take your mother as an example; when you first introduced her to bitcoin, she initially expressed no interest, and you didn't press the issue. However, after doing some research on the currency, she returned to you and expressed interest. Then, since you did not urge her to invest again, if anything occurs or the price of bitcoin drops and she is unable to sell it when she anticipates, she won't hold it against you. As a result, there won't be any friction between the two of you.
And once more, when you are introducing someone to bitcoin, make sure they are a well-informed and educated person because some people are difficult to understand. Some people will invest their money in bitcoin because they believe they will profit from it if they do so after you explain what it is. However, not everyone can invest in bitcoin because it is a type of investment that you must be capable of doing in order to do so.
A lot of people make this mistake, they get into the industry, find Bitcoin and cryptocurrencies fascinating, and they get excited, and out of that excitement they tell people about them and also ask them to get involved without even educating them about the risks involved with cryptocurrency investments, and when the people they invite actually invest some money in cryptocurrencies and if they lose money, they will put the blame on them because they are the ones who got them to put their money into it.
This is the reason why I never take the first step and introduce people to Bitcoin or cryptocurrencies, I might discuss it generally but I would never ask them to make investments in it so that they can get profit, and if they ask themselves, I always tell them that the market is very risky and there can always be negative outcomes as well.