She doesn't peck, kinda makes whistle sounds of n on? Does that makes sense? Her legs are under her, she won't attempt to bear weight on her legs at all, her comb seems pink red,
Your answers don't sound like broodiness, but also don't rule out nerve involvement or bone/tendon injury.
If either of those are the culprits, separation from the flock and rest for a few days will tell you more.
Heavy doses of vitamin B have been known to help with regeneration of damaged nerves. Crushed up vitamin B complex in oatmeal for a few days couldn't hurt her.
A few days of isolation, rest, and increased vitamin B might help. If it doesn't, that tells you something too.
As with any illness, hand washing after handling her and prior to handling the unafflicted birds will be important.
I'll be interested to see how she gets along. Sending healthy wishes!