Olive egger acting exhausted?

[KatsHerd]

Any help for this one please? She just started laying beautiful olive eggs about 4 days ago.
One of my other pullets (has since passed) in the same cage went paralysed yesterday, 2 hrs prior was fine, running around. What is happening?
I've put vitamins in her water, given her a massage to check for an egg stuck or wounds. There doesn't appear to be anything wrong with her. I've got her inside in a hospital cage, to see if I can help her. She CAN stand, she isn't paralysed, but it's just like she doesn't want to.

 

[Kiki]

Paralyzed could mean Marek's disease.

Did you check them WELL for lice and mites?
Are you SURE they are eating well?
What do you feed daily?

 

[KatsHerd]

Paralyzed could mean Marek's disease.

Did you check them WELL for lice and mites?
Are you SURE they are eating well?
What do you feed daily?

Definitely no lice & mites - I also did just routinely treat them due to weather
Eating well, they eat a pullet grower, as we have roosters & cannot feed layer feed. They have 24/7 access & constant fresh water.