They didn't specify where they gave her the shot...Can you post a photo or two of her from today please?
The dragging may be that the eggs are putting too much pressure on up her legs/nerves and making it so she can't use them. Could be other reasons too though.
Where in her did they give the calcium shot? Arm? Back....Low or high?
What's strange is that she was moving perfectly fine even minutes before she was handed into the vet.
She's sleeping in this pic so that's why she has her eyes shut. But she didn't have the strength to crawl up to her usual sleeping spot, which is why I'm concerned.