In theory. In practice there's a case where a defendant is being held in contempt (jailed) for years now, for refusing to provide her encryption passwords. At that point both the 5th and the idea of contempt are busted.
Link to story?
https://news.ycombinator.com/item?id=13629728
And he was freed after about 4 years.
https://arstechnica.com/tech-policy/2020/02/man-who-refused-...
> In practice there's a case where a defendant is being held in contempt (jailed) for years now
They are not still being held due to contempt, they were released. Now if he was convicted then thats different and the correct reason to be imprisoned.
> she
It was not a she.
The ruling showed that you can only be held for 18 months in the US for refusal. They would need to actually charge them with a crime if the government wanted more than that.