Not really though because they would have a lot of trouble converting all those coins to another currency at that exchange rate. Once they started selling, demand at that price would be met and the bidding price would fall.
Anyways, even if she had managed to exit with a large stash of money, she'd still have to keep it out of reach from the government authorities, lawyers, etc. So even if she owned $1B momentarily, it wouldn't be of much worth to her if she (rightfully) lost it all again in 4 years plus interest. That's why criminals have such an extravagant lifestyle: they can't think long term because long term they might be in prison, killed by another criminal, etc. Same goes for rich people in authoritarian regimes: the moment they fall out of favour, their money is gone, so often they want to get it out of the country before the tides turn on them.