Quite so, but in your great indignation re Pope Francis you are unable to keep focus on the original point…which is the lay woman who dwells in both jurisdictions and what is acceptable behaviour for her before God.
915 is not her problem, it’s implementation in each diocese is the Ordinary’s. If she is ok re canon 916 then where is her moral fault for approaching a priest for Communion ion in Malta?
Secondly, even re Malta you clearly accept scandal is a concern. Levels of scandal in a given country varies and is therefore a prudential aspect of 915, we’ll within the competence of the Ordinary to decide upon, especially as Pope Francis now provides that leeway.
Not her problem.
Nor is it layman Ender’s problem. If there is a sin of “being a busybody” I suggest you objectively keep crossing that line on these issues

. In doubtful matters God wants us lay people to look at our own affairs not worry about those that properly belong to the bishops and Pope Francis no matter how upset we get.
Again, not my problem, not your problem, and not the problem of the woman in question here who has broken no canons in either country according to her local Ordinaries and Pope Francis. God expects no more of her regardless of the rights or wrongs. If it is objectively wrong someone else may carry the can. You obviously hold Pope Francis responsible. Do you think he will burn a long time for this too?
Do you accept there is also another logical alternative here: namely, it’s not what YOU have always believed? But of course you won’t answer me on this question because Pope and Moral Theologian Ender is much smarter and more pastorally experienced and educated than the average Pope.