There can be several reasons why a rabbit doe may exhibit cannibalistic behavior and consume her kits. It is important to note that cannibalism in rabbits is relatively rare but can occur in certain circumstances. Here are a few possible reasons for this behavior:

1. Stress or fear: If a doe feels stressed or threatened, she may resort to cannibalism as a way to protect her territory or reduce the number of vulnerable kits. Stress can be caused by various factors such as disturbance, inadequate nesting area, or presence of predators.

2. Health issues: If a doe senses that her kits are weak, sick, or unlikely to survive, she may instinctively remove them from the nest to focus her energy and resources on the healthier offspring. This behavior is more commonly observed in wild rabbits but can occur in domesticated rabbits as well.

3. Lack of maternal instinct: Some rabbit does may exhibit poor maternal instincts, leading to neglect or even aggression towards their kits. This can be due to various factors such as inexperience, genetic predisposition, or hormonal imbalances.

4. Overcrowding or insufficient nesting space: When the nesting area is overcrowded or inadequate, a doe may become stressed and resort to cannibalism as a means of regulating the litter size and reducing competition for resources.

If you notice that your rabbit doe is eating her kits, it is crucial to address the underlying causes and take appropriate action. This may include providing a secure and spacious nesting area, reducing stress factors, ensuring the doe's health and well-being, and closely monitoring the breeding process. If the behavior persists or you have concerns, it is advisable to consult with a veterinarian or a knowledgeable rabbit breeder for guidance and assistance.