Too big a coincidence. Nicole seems to be a pretty busy woman, but when she finds some time she remembers her sister, they go shopping and she gives her a very sexy dress that is quite revealing, followed by an invitation to a party.
There are clues that Nicole is bisexual, she insists she likes men too, but we'll have to see if that's true.
Then the invitation to a party appears, Nicole must have insisted on wearing something sexy, I think she's suggesting that the dress she gave her as a gift would be perfect, forcing Wanda's hand here, but I believe Nicole wanted to avoid her sister wearing anything too conservative.
Nicole is interested in Wanda, maybe we'll find out if there's something in their past about that, but the main reason could be her desire to bring some excitement to Wanda's boring life.
Dolly seems to be brought into the scene to convince Nicole that Wanda might also be open to a relationship with a woman.
Here, Nicole is dancing with a man, it could mean she had no intention of seducing Wanda.
Dolly seems pretty pushy
Nicole begins to worry about what she sees, jealousy?
and decides to make it clear that Wanda belongs to her, ... no sharing
Here I think Nicole takes possession of her sister
![Unsure :unsure: :unsure:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
The only unknown would be if, after this event, Nicole will be totally convinced that Wanda likes women, too, or Nicole only might start to suspect, later, testing Wanda a few more times, until she makes a move.