Joanna has an amazing and vibrant personality, and I just feel that she drank to celebrate Romain's wonderful accomplishment. The only problem is that I think she may have drank a little too much, and when she ran into Marta's ex-boyfriend, then all her emotions were just multiplied. I can't blame her for looking out for her sister, but I do feel bad for Romain, because it was his night. When we love someone and have strong feelings and then mix it in with alcohol, you are sure to get an explosion!
Looking forward to seeing how this all plays out. Stay tuned!