I'm sorry that she can't have her only wish, but honestly right now I don't see it changing any time soon. Covid is definitely still around on the ships - my best friend avoided getting it when her fiance had it a few months ago, but got it while on the Wish a couple of weeks ago (she tested every day for a week leading up to the cruise, worked from home the last 4 days prior, and was negative up until boarding). So it's definitely still around on ships - and with fewer and fewer people testing over sniffles and coughs, it's going to likely stay around on ships for a long time.
Because of the risks of complications with people who are already at-risk, I honestly don't blame the foundation for putting the kibosh on something that is far riskier than land-based trips and things. They don't want someone's wish to literally become their final days.