late to the party and have only read partial replies, so I may be repetitive or missing something:
For me, Lisa, a little waist structure is all the outfit needs. Can you half or partial tuck? Can you fold the bottom of the sweater up on a diagonal so that we see at least more hip on one side? I often use this latter technique when a tuck won`t stay put or when I need to cut the horizontal girth of the backside (not your problem, but definitely mine).
Can you use foot inserts or other magic to make the booties fit? The outfit components are indeed splendid!