She has a pet Scottish Terrier, and at the execution the dog runs forward and causes her to impale herself on accident. Some people might be troubled by this since my sister was I thought I would mention it.
In her second life, she is married to her dog from the first life reincarnated as a human. There are several instances of him behaving like a dog and in the marital bed scene they have a not exactly consensual bdsm scene.
The main character releases a canary into the wild and is subsequently advised by a friend that it won't survive there. The canary is however found alive and returned to her in a later scene.