I hadn't thought of Sophie as being a Paul figure susieq, but I think you might be right.
I think Sophie is OK - I'm not a huge fan, but she has done nothing to make me dislike her, ok she can be a bit boring and hasn't added much to the house, but that's not a crime. I think she will go this week and I would prefer Jonny to stay, not because I dislike Sophie, just because I like Jonny more.