The Viscount's Proposal to the Wrong Sister

Canon Divergence Post S2E4. Following the viscount's proposal to Miss Edwina, he tells her that she should expect a marriage of friendship, but never love. As Miss Edwina takes time to consider if this is a life she can accept, she begins to see something blossoming between Lord Bridgerton and her sister. Was this a new development, or had she been blind to it all this time? AB/KS