Blood on roborovski's tail

[flowerfairy]

My little Fairy who will be two years old in September has got blood on her tail.

She is being perfectly active and eating and drinking but I saw a few spots of blood on some loo roll that I gave her to expand her nest and her tail looks red.

Will take her to the vet tomorrow. She has never been handled (she always fled from my hand before I could get it anywhere near her). How will they look at her?

I did consider bringing a jam jar ... I am worried that it will be stressful for her.

Will ring them first for advice. What would you do?