Top o' the mornin' me Paddy friends, how are ye aall?

How old was she? Going past her due date by a week may not have been the cause (I had a female that delivered two weeks late!), but without a veterinarian doing a post-mortem exam, there's really no way to know. Guinea pigs are very good at hiding health problems until they are critical, so there's a possibility she could have developed ketosis without showing it.

If this was the other way around, I would say it'd be okay for a couple of days. Hamsters have a pretty advanced digestion system and can get bloaty and sick when fed the wrong things. But never fear if you google hamster food you can find some more ''organic?" supplements until you can make it back to your local store. Rats/Mice on the other hand are made to hoard their food. They don't stuff it in their cheeks, although mine likes to sometimes it seems, they like to hide their food. Doing this they burn more energy and need a higher energy/protein diet.

I don't buy rat food, I make my own. I did the same with my hamster too with the store bought mix. Here's a list from my memory you can give hamsters that you may have around the house.

Carrots
Apples
Granola (Good for teeth!)
Cooked red meat (like hamburger meat)
Water Chestnuts
Nuts
Shelled almonds (more fun!)
Bread/Toast (My friend made peanut buttered toast for her hammy)
Fish (fully cooked!)
Eggs (Scrambled/Boiled no fried)
Cheese (in moderation)
Mealworms and crickets (you probably don't have these but for future reference :) )
Dog Biscuits (Try to stay away from some high in protein, and it's good for their teeth!)

Hope that helps!

They can be very friendly if raised from babies. They need to be caged at night or they will cause you grief.

Yes a rat nest can ahve at least a dozen or so in the family.

Cover the cage at nite so it is dark inside and then the hammie should sleep also.