First of all, I'm so sorry for your loss
The part where you mention the "one ich spot" is... sort of strange. Ich never shows that way, if it shows at all it makes the fish look sprinkled. If you can't see any spots, the fish will usually act lethargic.
But a wound... and a little something in it? For example ulcer disease may look this way, sometimes there's something sort of white and stringy-looking inside. Did it look swollen in any way?