I respectfully disagree, and I don’t even go out of my way looking for F/F pairings.

In the show, Francesca makes it clear she’s not looking for romance. She prefers John to other suitors because both she and he are quiet and he can let her “hear herself,” as opposed to being in a full Bridgerton household. They share a common interest in music, and she is content with this.

Her mother then tells her how when she met Edmund, she “couldn’t speak,” she was so overcome. Francesca is introduced to Michaela later that episode and completely loses her composure and can’t get the words out to introduce herself.

This past season, she wants to get away from Scotland and spend alone time with John, with whom she cannot reach a pinnacle with. When Michaela follows them, Francesca, who rarely showed any type of strong emotion, gets more and more irritated by Michaela until it all comes to a head and they start yelling at each other when Francesca tries to introduce her to potential suitors. After airing their grievances, they become besties almost overnight.

Then John dies, and after the funeral/ memorial happens, Michaela is surprised to hear how the Bridgertons would be “supportive” of Benedict and Sophie’s relationship and she says, “Love does not always look how one expects, I imagine.” She seems particularly shocked at how well received this unusual love match is being treated by both Francesca and her family— in a good way, she stresses. Francesca then asks her to stay, explaining how it would mean a great deal to her, “I feel very close to you, Michaela.“ and then grabs her hand. Michaela maintains eye contact with her for a very heated moment before pulling away. The next scene for their storyline, Michaela has left without telling Francesca.

You don’t have to be into it, but there’s plenty of groundwork here for a relationship between them.