They are probably going to replace the whore Alayaya with Ros. In the books the whore Alayaya was the daughter of the Chataya. Chataya was the owner of the upscale whorehouse that Tyrion visted regularly (this whorehouse is unaffiliated with Littlefinger), Tyrion had an arrangment with Chataya and Alayaya where he pretened to visit Alayaya for sex, when in reality he was visiting Shae. During these visits Alayaya practiced her reading. Tyrion went to this lengths to throw off any spies that might have been following in order to protect Shae.

At the end of Clash of Kings right before the battle of blackwater the paranoid Cersei threatens to harm Alayaya, to prove her mastery over her dwarf brother. Tyrion responded that he would harm his own nephew (Tommen) in every way that Cersei did to Alayaya. Tyrion says in his mind he would never do this but he was convinced Cersei believes he would hurt his own blood, thus keeping Alayaya safe. In ASOS Tywin Lannister has Alayaya whipped and she sleeps with both Bronn and Oberyn.


The reason why I think they will keep this scene but replace Alayaya with Ross is that they kept this line from the books.

"I will hurt you for this. I don't know how yet, but give me time. A day will come when you think yourself safe and happy, and suddenly your joy will turn to ashes in your mouth, and you'll know the debt is paid.”

We see this line played below in the trailer below.