But between her dress and their attitudes toward each other, it just felt off.
I’ll have to go back and re-watch the Skin Deep and Lacey stuff to be able to judge better, but just re-watching the Going Home scene, I think it would fit if this was after their conversation in Skin Deep, (but before the end of Skin Deep).
In Skin Deep he said, “There was a son. I lost him –” and in Going Home he said, “He’s not dead, he’s just lost,” as in, “Don’t you remember what I said the last time we spoke about this? I never said he was dead, I said I lost him.”
In Skin Deep we learned that Belle had seen the child’s clothing, and in Going Home she had a moment of recognition when she saw the clothing on the table.
I think that considering they had had that previous conversation about him having had a son, that’s why Belle felt OK to ask some more about him in this scene. But because it was an especially sad moment for Rumple, he just wasn’t interested in speaking to her about it right then, and was initially just annoyed at her being there, messing up something he’s done as a ritual, every year for over 100 years.