need advice about new ladies

Absolutely not. It may be hard to watch, but you have to let her go through the pecking order. If I have to bring in new birds I get at least two at a time from the same place so they won't be alone during this process.
You will have to just let it happen and only interfere if actual injury seems imminent. Taking her away and putting her in a separate cage only makes them start from the beginning next time they see her. Try waiting until later at night when they are all sleeping in the coop and quickly place the newbie on the roost among them. This will help because in the morning they will all wake up together and notice her less.

 

Well, you skipped the most important part of acquiring a new bird, the 4-6 week quarantine to be reasonably sure she doesn't have anything that can pass to your flock and make them ill, including, but not limited to, lice, mites and worms.

And adding one bird is very difficult. It's always best to add at least a pair so she'll have a buddy she knows. Best to step back and do quarantine, then later, divide it up so they can see each other through a fence but not be in the same pen, then that's when you add the newbie.

 

Oh, you're not alone, trust me. So many other folks have done exactly the same thing. Just want to help someone avoid the heartache of having a flock decimated by a carrier of some contagion they added without that quarantine period. Next time, you'll know better. Hopefully, this time will be okay.