I don't understand the reason for simply not having left a message or something that no further contact is needed or desired. Just seems inconsiderate to accept an appointment and not have the courtesy to simply cancel. You could have called the church or her number after hours and just left a message for her or something; it wouldn't have even required speaking to her personally. Just seems like this "ghosting" is a just creating more difficulty for you, whereas taking active control and actually actively cancelling would have been a more powerful decision.