some months ago my mother called me that she now have interest on investing on Bitcoin with some amount of money, I ask her what happened! I thought she rejected the idea when I introduce it to her some years ago, and it have been long we talked about it. she said to me, I have make some research and ask questions about Bitcoin after all my mother invested huge amount of money $5k on Bitcoin which she's benefiting from it today.
When you persuaded your mother to invest in bitcoin, I don't know what the price of bitcoin was at that time. But maybe at that time the price of bitcoin was quite expensive, and now the price of bitcoin is quite cheap. So maybe you're lucky that you and your mom haven't bought bitcoins yet, and now that your mom has agreed to invest in bitcoins maybe this is the right time. Bitcoin has a low price and will soon be halved
Apart from the potential profits of investing in bitcoin, you also need to consider the possible lose. But from your story, your mother has been researching bitcoin until she finally agreed to invest 5k. For me that's a lot of money, I hope you get profit from the investment you make