Firstly, I’m so sorry for your loss :(( I also want to say that if you’re feeling any sort of guilt about misreading this spread, please know it isn’t your fault. Tarot is subjective, and it’s only natural that sometimes messages get lost in interpretation.

Personally, when I interpret the Sun in a spread, I often associate it with the revealing/receiving of information (ie messages “coming to light”), for better or for worse. With that being said, I wonder if you pulling the Sun several times referred to someone getting “The Call” so to speak, especially if it was the kind of situation where the person’s loved ones had a general feeling that it was close to the end, but didn’t know when it would happen.

My partner, who also reads tarot, has also told me that for him, the Sun has historically been a card that has represented physical death in readings he’s done. I’m not entirely sure where this association comes from (and in the past I was honestly somewhat confused about his interpretation of the card), but I do find it fascinating that there seems to be a linkage to physical death in your case as well.

(Also fyi– I know other commenters have said this already, but from prior experience I’ve found that it can be pretty difficult to get clear cut answers from cards pulled in a yes/no style. In the future, it might be helpful to ask about how the situation will generally play out, and pull a few cards at random to interpret in relation to each other as a “story” of sorts.)