I'm close to my sister who has been in the hospital but I'm enjoying not having her around.
Why would you say that?
I miss her so I'm shocked I'm enjoying the alone time.
Missing your sibling is normal. Maybe don't tell her you have been enjoying her being in the hospital, it sounds a little mean.
Since I'm enjoying this, I want her to stay in the hospital for a while.
I understand wanting alone time every so often, but wishing your sister stayed in the hospital is wrong. You should want her healthy again.