It broke my heart. My DBT got shell rot days ago. I brought her to the vet and got some oral antibiotic for her. Today when we were using the injector to send the antibiotic into her mouse, she bit at the injector and a piece of her steak fell off.

I'm scared to death. Will it be a severe problem? Do I need to take her to the vet immediately?

Any suggestions is appreciated. Thanks a million!