when is the last time she laid? look at her vent is it pulsing? put her into a tub of nice warm water keep it very quiet in there while she is floating turn the lights down but stay with her. let her float till the water starts to cool down. Sometime warm water will help them relax enough the egg will come out. While she is floating gently feel down around the lower belly to see if you feel and egg. You can also lube up her vent put on latex glove and use Ky jelly or vaseline or coconut oil and gently go into the vent and around the outside. Do you have any calcium? tums will even work but put some calcium into some water and let it dissolve then let this be her drink over night. after she has floated you can keep her inside in the tub with old towels under her so the rest of he flock won't disturb her. She needs to be kept quiet and stress free.Sorry to be short but I only have a moment. What do I do if I think a duck may be egg bound? If she gets up, she soon after just wants to lay down again.
Thank you in advance for any info you can provide.