Hmm.....

 So Kristen called Steve/Stefano DAD at the end of Monday's show and when they redid the scene Tue she didn't say it.  Maybe one of the editors realized NO ONE ever caleld him Dad.  It was ALWAYS Father!

Also - when Steve showed up at her room she said something along the lines of "my birth father."  Umm Kristen - did you forget you were adopted LOL