If it helps I hadn't planned on getting her, but hearing ASMUS talk about her and seeing pics, if you can get her and exchange if there is an issue, I would go for it.
Don't use the word lovely very often, but she is. Expressive sculpt, great creamy paint. if there is a difference between the head and body, it wasn't anything I picked up on. IMO height is easily dealt with, if needed, with any kind of simple riser - like stacked tiles, patio pavers, even a suitable rock. As for the dress, in the films no way to know how stiff the lace was originally, but for this 1/6 - if needed - I would just dampen slightly and scrunch into place. Imo you can't have an embroidered fabric in 1/6 without a bit of stiffness. Think sometimes folks are scared to futz with their figs.
For the price IMO a very nice job by ASMUS. She comes across tall to me, even if that isn't real. I would definitely get the dx if posssible. Finally think her aftermarket price will be horrible, as Galadriel is a main character in the upcoming Amazon series and there will be Middle Earth hype.