No Respect??

When I put Zara in the loft to be with her family, her sibling and her Mother stood on her back while she was laying down as if to hurt her. Is this a gesture of authority or are they trying to hurt her??(In your opinion do you think she's safe in the cage with her family?)
I have returned her to the house with my family.
Has anyone heard of this type of behavor before?? Do you think this is because she has a broken leg?? I was also wondering why her development was stunted when she broke her leg, she still has her yellow fluff on her head, and looks much younger then her sibling. (They are about 8 weeks old)
Will post pictures of Zara and Speckels together tomorrow.
Thank you all for the advice I don't know what I'd do with out it!!!!

These are some pictures of all my birds http://community.webshots.com/user/keysca