Yes, I'm very familiar with body in space (perhaps a little too much since it's been a bugbear of ours) and what your describing with your DD. DS7 was born with torticollis (head tilting) and he had 5 years of ot/pt to help with body in space since he couldn't keep his head/body aligned and had no concept of where his body was.
DS had 2.5 yrs of vision therapy too, which helped a bit with body in space. So you might want to see a behavioral optometrist. We didn't know DS was pg until he had vision therapy and started to fly through the reading and writing so the results can be dramatic with it.
In August, DS started neurofeedback and had 6 weeks of water therapy with Dr. Burdenko (he developed the Burdenko method). Dr. Burdenko saw DS for two minutes and said he had no body awareness or concept of his body in space. I wanted to scream - Noooooo.
In the end, Dr. Burdenko designed a set of water/land exercises for DS to address body in space - a lot of bilateral exercises using both sides of the body as well as balance beam exercises. Dr. Burdenko spent 6 weeks showing us the exercises for us then to do at home. We took a bit of hiatus and actually have to return to do them again, so this helping me to remind me! I know there are practitioners of the Burdenko method scattered around the US and parts of the world. So you might want to consider pursuing water therapy.
From what I understand, the lack of body in space/awareness can be a neurological, behavioral, and physical in scope - or at least that's what it's been in DS's case. And believe it or not, the anxiety and attention can be connected to it. Vision therapy, neurofeedback, and water therapy have really helped DS. Unfortunately, it's not a quick fix or cheap. One step and one day at a time, I say.
