I'm going to go off on my girlfriend next time she called me a bad pet owner.
Do you believe you are a bad pet owner?
No, but she called me a bad pet owner after I had a pet for one year.
I understand the frustration of being called something that you're not but going off on your partner is a bad idea. She would be more adamant about her accusation because you aren't being rational.
I could have bought the pet a chew toy. It is her fault for getting me mad.
You two need to stop and sit down and talk. You shouldn't be getting angry at each other and doing harmful things to each other. Maybe you can bring your pet and show your girlfriend how well you pet is doing.