I don't think Sunny's psyche is holding up very well.
>>528444045
I'm think Mari's funeral was an open casket one. It's such a strong image in Sunny's mind that only appears in Black Space and Final Duet. I feel like it did happen. That this was the last time any of them got to see Mari.
Also I knew this was a thing prior, but I needed a quick search to find a name for it. It's apparently called mortuary cosmetology. Rope burn and any bruises Mari had wouldn't be hard to clean up for a funeral.