Church dress:
Well, she has a couple of problems. Someone must have told her once that a dress cut that way is flattering to her. It’s not. If you are a bit of a pear, high-waisted with pleats or gathers is just going to accentuate it and make you into a bell. Her other problem is she doesn’t know how to carry herself. So the dress problem is compounded by the slouchy walking. I suggest she gets a better stylist to help her pick styles that flatter her, and the cut is more important than whether she likes big prints. The fabric was OK, the cut made it worse. For the carrying herself, if she objects to a charm-school type teacher then she should take ballet classes to gain some poise.
The inaugural ball dress:
Again the dress isn’t too bad. This cut is more flattering to her. It would have looked better I think with 2 thinner straps than the one. She needed a wispy lace evening shawl to drap over her arms so she’d have something to do and not have her arms just hanging there. It looks like she is either not used to being in evening attire or never learned to stand still even if your feet hurt. She is constantly shifting her weight, pulling at the dress, doesn’t know what to do with her arms/hands, etc.
She really needs a coach to help her with this stuff because she has a multitude of events to attend where she will be pretty much just standing or sitting there while someone else speaks, not to mention the appearances she will be making on her own.