So a funny thing happened on the way to that last requirement... lol.
My founder only knows 3 Sims, including her soon-to-be husband. She made a best friend and BAM! as soon as the best friend was made, Grim came calling for the friend.
Can I pull the friend's tombstone from the mausoleum, place it on a community lot and still count the best friend, or do I need to find a new one? If I can count the dead friend now that she's a witchy ghost, do I have to wait for her to show up in ghost form?
Once the best friend requirement is done she will have fulfilled her requirements and be ready to have nooboos.