If your moms ready to lose all her investment and comfortable with it then its OK.
Maybe she will get a big return or nothing, as soon as she does not put all her saving into btc.
Good luck to your mom.
The way the bitcoin community is a bit destructive in its own way, I had to sit my mother down whom is 55 years old and explain how unpredictable it is to work, however after explaining to her how volatile it really is, she was still prepared to risk her money for a short-term gain if it works, my mother is absolutely awesome! in her own way that she really wants to learn!
https://youtu.be/0X_zOTnXpYA