It’s really healthy you can laugh. My sister had massive withdrawal hallucinations. It was really frightening but like you say sort of amusing at the same time as some of the things were bizarre! She said the people on unicycles were keeping her awake at night?!? Also someone on the all women’s ward she was on got her pregnant?!? That was just the start of a long list of things happening over the 5 days she hallucinated. She became coherent after day 5 but it took months for her brain to correct itself properly. I hope your wife is feeling better v soon.