Sabina is definitely interested in have some just us girls time while Astoria is visiting! She just has a tendency to get very wrapped up in Gus because she's lucky enough to actually be in an arranged match where there is actual affection. She's sorry! She will be better once she knows the details and realizes that Astoria is actually upset about her engagement ending. I think she figures that Astoria is more like Sasha when it comes to these things.