Help Budgie Broken leg/Behavior

[sunnyann]

I have a VERY sweet albino budgie (Ghost) that I believe is a young female. She’s an absolute angel, but unfortunately she was accidentally stepped on yesterday. We took her to the vet and she was diagnosed with a broken right leg... Thankfully no other injuries!!!!!! The vet put a splint on her leg, but she will not move her foot now. The leg is off to the side and her toes do not move or grasp/close.... is this a concern? Or is it because her leg is in the splint???
She is eating, drinking, and hopping around on her left leg. We also have a young lutino budgie (Sunni) who is the newest addition to our family. After Ghost was hurt, I believe she was in shock so she wouldn’t move. It wasn’t until Sunni called for her that she perked up and started trying to walk. We are so thankful that Sunni was here for emotional support for Ghost. 
But then, this evening Sunni walked on top of Ghost while they were eating and hurt Ghost. I have been keeping Ghost in a box so she will stay warm and won’t over exert herself. But Ghost LOVES Sunni! She will hear Sunni and do everything she can to be next to Sunni. I don’t want to hold her back too much as I believe for the most part this interaction is beneficial. However, I just caught Sunni put Ghost’s right foot in her beak. I’m not sure if it hurt Ghost but I separated them. Is Sunni checking on Ghost or is this malicious behavior? 
Sunni has been eating more ever since Ghost’s accident and I assumed it was “stress eating.” Not sure if budgies do that.... Sunni also was unsettled all day while we had to leave Ghost at the vet. So, I believe she was worried about Ghost. Can someone please, explain this behavior to me? Or what I should do? Thanks!

[mona]

I guess keeping Ghost separate for the time being is better.. The birdie needs time to heal itself..

[Hezz]

Keep her in a separate cage, but close by so that they can see each other. Move all her perches out expect for one laying on the floor of the cage so that she can perch on it with her good leg/foot (budgies’ feet wil become stressed if they are laid out flat all the time), but will prevent the broken leg from dragging down. Is she on something like Maloxican for pain and inflammation? She may not want to move her toes because it hurts, at this early stage.

Cover her over for the most part leaving only a opening so that she can see the other bird and try to prevent her from climbing the bars of the cage. That’s almost impossible, but do what you can. If it helps, move the perches of the other bird’s cage down lower as well so that she isn’t trying to reach the same level as that one.

Some budgies will attack a weaker bird, mostly hens seem to be the worst, where others will try to help the injured one.