[Vivianne]

Hello Trinitii,
I too have a female rotty that displays the same behavior as your Athena. My Madison is only 3 months old and I correct her as follows: After a few ignored stern NOs, I lay her on her side, place one hand on her head (check area away from her alligator jaws) and the other hand on her hips. Without applying much pressure I hold her their until she goes limp. I only apply enough pressure to keep her still when she initially squirms to get free.
When she has calmed down I release her and pet her gently repeating "good girl." This is her reward for being gentle.

Why she treats you differently from your husband has to do with where she stands in the pack. She's placed herself between you and hubby. If you are as strict and consistent with your tolerance of bad behvior as hubby is you will become the alpha female to your pup.