Same hen that expelled the lash material in this other thread?
https://www.backyardchickens.com/threads/hen-pooped-hard-light-yellowish-nugget.1564019/
Worms would be only part of her issue if it is.
She's got Salpingitis, has also had a collapsed egg that you had to remove. Was it all intact or did the contents of the egg spill out?
You can try treating her again for infection to see if that helps. Sadly, a lot of times when hens have reproductive problems the issue is chronic, so the best you can do is treat symptoms as they arise, keep them comfortable and evaluate their condition daily. Sometimes they can bounce back for short periods of time, but ultimately there comes a time when they just can't.