Dear, Neighbor
I hope you are doing well. I am writing to sincerely apologize for the incident that occurred while I was housesitting for you. While I was letting your pet out for fresh air, I did not realize that the door was not fully secured, and unfortunately your pet escaped from the house for a short period of time.
As soon as I noticed what had happened, I immediately went outside to search for them and contacted nearby neighbors to help look. Thankfully, your pet was found safe and unharmed, but I understand that this situation could have caused you a great deal of worry, and I am truly sorry for that.
Going forward, I will be much more careful by double-checking all doors and windows, keeping your pet supervised at all times, and following your instructions more strictly to ensure their safety. I take full responsibility for this mistake and will do my best to prevent anything like this from happening again.
To make up for the distress this may have caused, I would like to offer to cover any related expenses, such as a vet check-up, or help in any other way you feel is appropriate. Please let me know what you think would be fair.
Once again, I am very sorry for the incident and appreciate your understanding. Thank you for trusting me, and I hope I can regain your confidence.
Sincerely,
Lovely
