Fudge and Rainbow :)
Adult Guinea Pig
I am very sorry for your loss! As long as she was fed fresh veg on a daily basis, she wouldn't have died from dehydration. But it is very normal to reach for anything when you don't have a clue what happened.
Sadly, we often don't know when a piggy is suddenly passing away out of the blue. It is much more likely a stroke or heart failure, and there is nothing you could have done even if you had been there.
RIP Pansy