Oh yeah, and that's ridiculous, but I've come to expect that from the US justice system.
Here, let me punish you by sending you to a place that's supposed to help people for 25 years.
I'm more questioning how 16+25=37.
That said, I do indeed have to question giving a defined sentence for a mental hospital. Keeping her there until she's cleared to leave would make far more sense. Maybe that'll be less than 25 years, maybe more, but defining her stay like that is ignoring the only important determining factor for when she should be released.
This. Like, what if she's actually "better" after 10 years, but then the additional 15 years causes her to be worse than how she was originally?