Lots of women seem to love the pregnancy bedrest thing...they probably love the attention of being "at risk" or "sick". There's no real medical benefits to bedrest either...neither fetal or maternal outcomes are significantly improved with bedrest. There are significant risk to the woman though. Bloodclots from inactivity are potentially deadly. You would think your sister, being an ICU nurse, would have seen a fair amount of deaths from bloodclots and pulmonary embolisms in her patients and wouldn't want to risk that herself. But...I have found that nurses (and female OB's) are probably the most compliant OB patients, and seem to go for every intervention and gizmo available. It's the medical mindset...they think doctors can fix everything.

I wish her well. I hope she goes a lot longer than 24 weeks.