Hello Nicki
I am sorry for your loss Rhubarbie rest in peace little one.
Without a full vet exam/autopsy you may never really know the full reason for your little one's passing. I am sure you did everything for her at the time. Often by the time hamsters show any signs of distress or pain they are too ill for a vet to help. As prey animals they are very, very good at hiding discomfort as any sign of weakness in the wild would make them more attractive to predators. If we catch the signs quick enough an emergency vet visit can sometimes help prolong life. Injections of fluids and pain relief are possible, as well as heart medications etc. More often though the vet can help them pass more painless, via euthanasia.
I hope you will find a place in your heart, both of you, to love another small furry in the future.
Please leave a little Introduction to yourself Nicki in the
Introductions Section if you can.
Welcome to Hamster Central. Hope to hear from you soon.