That's incredible she's held that long. The Mt. Gox hack scared me away originally. I never circled back until 2017. But I can't honestly say I would have held that long either after "x" amount of gains. So I don't dwell on it. I also didn't understand it pre-2017. Back then it was just a hunch. But I've been living it and breathing it since 2017 with 100% conviction.
I've been teaching my kids about it since they were 10. They've been buying and holding for six years now using their own money. (Birthday, Christmas, etc.) Same with my GF. I convinced her to set up weekly auto purchases. She's been accumulating for close to four years now.
I've done plenty of laps trying to convince family and friends for years to invest and tried to explain there is no better long term asset. But most remained skeptical so I've given up. Still to this day though, if anyone is willing to listen, I will always recommend buying Bitcoin with every bit of money one could spare, for a long term hold. I believe any and all money kept in a traditional savings account, retirement account, 401K, IRA, etc. should be converted to BTC. But even if someone isn't willing to take that risk, just buy a little bit weekly, whatever you can afford. Even if it's just $20/week. I firmly believe we'll see a $1M Bitcoin in the next 10 years and wouldn't be surprised to see a $10M Bitcoin in the next 20.