https://www.backyardchickens.com/threads/calcium-gluconate-for-egg-bound-ducks-preliminary.959537/#post-14940
https://www.backyardchickens.com/threads/calcium-gluconate-for-egg-bound-ducks-preliminary.959537/#post-14940303
This link will show you what liquid B Complex to get...
I’d def get her back on niacin the best would be Liquid BComplex 1 ml over a small amount of treat so you know she gets the whole dose and I’d also give her liquid Calcium gluconate in case it is an egg. Put her with her flock but in a dog crate for bed so no one picks on her while she is like this.