Sadly I lost Molly last night.... I did every I could!In some cases it's best to worm first time round with the piperazine, it's a little gentler on the system and because it doesn't kill everything at once your birds are less inclined to suffer complications . Worming sick animals is a judgement call , if you think that parasites may be the underlying problem here , yes I would worm her. Just remember that a burden of worms can trigger many symptoms including upper respiratory issues.