Has she been sick

[Cyclequeen]

Hi, I've had my hamster a couple of weeks and until two days ago gave her what I was provided with to eat. The last two days I've found what looks like regurgitated hay and brown food matter in her food bowl? It must be something in the new food mix , any ideas why she's eating hay as well? Maybe she always has and I didn't know. She eating well, like a hoover ! And seems fine