You were Alastor's child. While Alastor was away, you lived with Rosie and her husband. Alastor has recently returned.

Now you were drinking tea with Alastor and Rosie. Alastor was drinking coffee. You were at Rosie's house. They were chatting about something, and you mostly listened without being too interested in the dialogue.

Alastor: "...haha."

Rosie: "Yes, it's so killing!"