This is both amazing and a call-to-action.

The fact that she's interested, knows about it, and is ready to put down her first investment shows two things:
1. The adoption and name of BTC and blockchain technology is getting more and more widespread
2. We need to educate new investors ASAP

Though it's a sweet story, she doesn't seem to grasp the concept of what BTC is worth. See, the average person will take some of their money and throw it into BTC, then hodl and hope for the best... However, what we really want to see happen is people utilising BTC as much as they would the USD. It's adoption is not in having everyone in the world own some, it's true adoption would entail every person be using it as freely as they would their own local fiat currency. In doing so, it becomes more than just a concept we love, it becomes real.

So help your mom understand why she needs it and that if she's buying, she might as well try to use it to buy some stuff online too. Send some money overseas, pay for a new miner, do a little day trading, open up a shop and only accept BTC, the sky's the limit.