my hamster died giving birth?

Question
i had a russian dwarf hamster for about 2 months now and i went up to my room and found her on her back dead with a tiny baby hamster halfway out of her i had no clue she was preganant due to the fact that i have no other hamsters she never got any bigger than when i bought her and i bought her 2 months ago and the fact that the prenancy should only last a max of 21 days is what i heard i was just wondering if there could be any reason why this happened im sure there are many reason but i figured i would try any help would be great i am more looking to find out if i did soething wrong her tank was a 30 gal long screen lid fed once a day water change oce a day always at 7am tank cleaned once a week on friday and she had plenty of places to hide and a second level a wheel and a seperate play cage with the tubes and all that i put her in every other day and opposite days was her ball also i went to sleep at about 1am due to the fact that she was making noise on her wheel running so she seemed fine at that point and this morning during feeding

Answer
I am sorry to learn that your pet passed away. It is very difficult when something you cannot control occurs. This is one of those time. She may have been late in delivering or had the baby just not come till it was way to late. There is really no way to tell. With no signs of pregnancy and eating, drinking, and acting as normal I believe that there was nothing you could have done.

You had all the things to make her life a great one and you did all the things needed to take care of her. If you decide to get another hamsters just keep an eye out for any of the following signs that signal something is not right:

-changes in eating
-not drinking water
-very inactive
-changes in body shape(may be pregnant)
-blood at anytime in the cage
-louder than normal squeaking signaling pain of some kind

Here are some websites that may give further info:

http://www.hamster-zone.com/hamster-reproduction/hamster-pregnancy.html

http://www.hamster-club.com/health.asp

http://www.hamsters.co.uk/