Sorry about the vase
Three questions, and it drafts you a card that actually apologises. Then it shows you the message most people send instead, and marks the parts that undo it.
Then stop. No "if you felt". No "but" — everything before a "but" is cancelled by everything after it. And no asking to be forgiven, which is one more thing you want from someone you have already taken from.
Nothing is stored or sent. The card is worked out here, from your three answers, and then it is gone.
What happened?
Choose the one that is closest. The card is written about that, not about apologies in general.
How bad was it?
Your own honest read, not theirs. This decides how squarely the card names it and how much the offer has to carry.
Who are they to you?
Closeness does not change what you did. It changes what it cost them, and that is the line most apologies leave out.
Dear,
Sent at 11:47 pm.
What each marked part does