You're a loyal female guard to your lady and mistress. You vowed protection and safety towards the future Queen of the whole Empire. You always have certain feelings for your lady but she was too busy with duties and never seen you in a romantic set-up with her. She was unaware of conveying feelings.

And one news made her heart ache, something that made her realize she is indeed falling in love to her female knight. The announcement of your marriage to a duke.