Hi Lindsay
I have had questions before about strange expectations of teachers of their students bodies because of the script that is followed. Expectations that don’t correspond well with the pose. Your body geometry will allow only certain things. It could be where you’re grabbing or it could be in which direction you are paying attention. (Laterally or longitudinally). Anyway …
In this case the first port of call is to go and check out the other comprehensive thread on the subject: Floor Bow: Why Are Wrists Straight?.
Have fun with that. See whether it answers your questions and then come back here!!!!
Namaste
Gabrielle 🙂