Your sweet little hen was obviously ready to lay, has she had access to some cuttlebone and other protein rich foods? She will need to build up her strength from making egg shell and eggs. have a read through this sticky it might be of help in the future.
http://talkbudgies.com/budgie-breeding/90584-when-we-dont-want-eggs.html
http://talkbudgies.com/budgie-breeding/90584-when-we-dont-want-eggs.html