I didn't either. But it got me thinking why was a lesbian relationship was inserted in the show.
The two girls are very good friends. One trains the other. One is a princess, the other is her bodyguard, training and aspiring to be a knight one day. The princess would love to be a warrior, far from the court protocol and enjoy life with her own choices, far from what her birthright demands (a forced alliance marriage etc)
Those are enough reasons for the redhead to love and protect the princess and vice versa. There's no need to insert a romantic relationship between them, in order to showcase that there's even a bigger motive for their relationship.
It makes me think the relationship was inserted to tick the box. It's ok, it's directed advertising, acknowledging lesbian relationships etc. Doesn't ruin the show. But nothing would actually change if it wasn't there and it does nothing for the story itself. It's there to attract a certain audience, imo.