Hi Victoria - sorry to hear you are having such a hard time at the moment!
Just skimming your posts, I am wondering if she might be half waking up and then expecting to get into bed for a cuddle with you to get herself back to sleep, if you have done this a few times? If that's the case, you would need to teach her to go back to sleep on her own using pat/shh in the cot, or PU/PD if shh/pat doesn't work for you.
the other thought I had was the screaming - if she is screaming when she wakes that would suggest either overtired (unlikely given your routine, which looks great) or pain (so keep up those pain meds if you think she's teething).
Bryony