Hi. Our little girl just passed away yesterday. She was a 20 months old syrian hamster. We're wondering what made her die. She got so inactive like she's old more than 2 weeks ago. There was a reduction in her appetite, and she couldn't walk properly. It was like she is shaking like an old woman. We realized there is no poop in her cage, so we took her to a vet. The vet told us it's a kind of bacterial infection (maybe because of what she ate?) and he gave us some anti biotics. Our little girl got just a little better. She started eating (but just a small amount of her food) and we saw poops rarely. She also made some noise but I'm not sure if they really looked like coughs. Her body was also cooler than normal, and she lost some fur on her body (but some vets we visited told us it's normal! and also one of them told us it's a heart disease!) 2 days ago, we took her to vet again because she has came out from her nest and slept on it. The other vet said it's a lung infection and it's kinda severe. There was no discharge from her eyes or nose, and she actually gained weight during this time of inactivity, even though she didn't eat at all or she ate just a little. The vet told us to come back tomorrow for an x-ray, but she left us.
My partner feels so guilty, he thinks when he was giving her some water (because she didn't drink at all) this could make an infection in her lungs. We're not sure if it was an infection or a tumor. Could you please help us?