What to say to a girl who is angry at you?

The sentence that stings is usually the one she is most willing to repeat. When she writes that she figured she isn't a priority, she is naming the story she has built about what happened, not the bare facts. The cancellation is the event, and being deprioritized is the meaning she attached to it. If you answer only the event, you miss the part she is actually hurt by.

Signals like "no need to reply" or "it's fine" are not permission to disappear. They are her way of making you prove you care about the answer. Treat the flat tone as a sign the hurt is real, even if she is hiding it. A message that sounds calm and short often means she has already decided how much she is willing to say.

A reply that opens by reflecting her feeling back, in plain words, tends to lower the heat faster than anything else. Something that matches her actual sentence, like saying the last two cancellations made her feel like she came second, shows you heard the thing she is hurt by. The point is to match her wording and her level of intensity. If she is quiet and cool, go quiet and plain. If she is loud and emotional, do not answer with a calm, managerial tone that reads as dismissive.

After naming the feeling, say one concrete thing you are taking responsibility for. Keep it to your action, not your motives. Avoid the explanation of your week, your stress, or your schedule until she asks. Those details can come later, once she believes you took the complaint seriously.

Timing decides whether your apology lands as sincere or as a tactic. If it is late at night and she has gone silent, a fast, long reply reads as anxious and can make her feel pressured. Give her a few hours, or until the next day, unless she has asked you to answer right away. A short, considered message sent in the morning usually beats a paragraph sent while she is still stewing.

If she does not reply, do not send a second apology. Let the silence sit for a day or two. One follow-up is reasonable if it is light and gives her an easy way back, such as a plan or a question about something unrelated. Two follow-ups with the same apology means you are asking her to reassure you. If she still does not answer after a week of quiet, stop, because the conversation is over unless she starts it.