I mean, it's Dragon Ball, so Goku could come back from the dead at any time. But even so: is it really an affair if she's a widow??? And with it being Dragon Ball, if he doesn't come back within a few days, he's pretty much choosing not to. And she'd probably know if it was to save the universe or not.
It's after GT's ending, Goku absorbs the dragon balls, becomes some kind of weird immortal ghost, and flies away with shenron making a point never to come back. Then he shows up about 100 years later to watch a tournament match between his great great grandson (?) and Vegeta's and then fucks off again.
I guess point is, Goku wasn't really around his family or anyone in the world of the living after the shadow dragons arc. Chichi might as well call herself a widow during that time period.
And in the end of the day, this is just non canon fanart anyway. No need to think too hard about minutia.
Base +1, Toni95 -6, Kang202323 +1, Kaizoku_Alex +6