Partner little sister in tears

I feel terrible, partner’s little sister’s pet rat died while in our apartment. I fed him this morning and he looked fine but by this afternoon he was in his home dead, she and one of my partner’s nieces was here and they both are crying right now. what if its something I did? no body is blaming me yet but my in laws usually blame me for stuff like this.

I doubt it was anything you did, sorry for the loss of your pet, it is hard to lose an animal.

Outch. But you didn’t do anything wrong.