I assume she doesn't have any other business that will sustain her daily cost of living because you said this.
I am certain she would make tremendous profit on the long run but what happens now. Is she going to starve to death. She took this decision when one of her closest neigbour purchased a landed property after withdrawing from the bitcoin he bought sometime around 2018. This got to her. She felt her taxi business will not secure her the kind of future she has always dreamt of. This lead her into buying this bitcoin
It's never a good idea to pour out your money to an investment that's just had a good run from the same year. I'm afraid she'll be waiting for a profit in the next 5 years If she's trying purchase Btc even at $50,000.
Her decision was just based on her jealousy from her neighbourhood after successfully cashing out their Btc, which is also not a good sign of investment purposes.
The best thing to do is slowly invest in Bitcoin. Everytime she makes a profit out of her Taxi business, she should slowly buy and accumulate Btc. That way she won't compromise her costs of living.