Context: in this passage, Jenny and Sandy, two students of the titular character, compose a fake love letter in her (Miss Jean Brodie's) voice

My Own Delightful Gordon,

Your letter has moved me deeply as you may imagine. But alas, I must ever decline to be Mrs. Lowther. My reasons are twofold. I am dedicated to my Girls as is Madame Pavlova, and there is another in my life whose mutual love reaches out to me beyond the bounds of Time and Space. He is Teddy Lloyd! Intimacy has never taken place with him. He is married to another. One day in the art room we melted into each other's arms and knew the truth. But I was proud of giving myself to you when you came and took me in the bracken on Arthur's Seat while the storm raged about us. If I am in a certain condition I shall place the infant in the care of a worthy shepherd and his wife, and we can discuss it calmly as platonic acquaintances. I may permit misconduct to occur again from time to time as an outlet because I am in my Prime. We can also have many a breezy day in the fishing boat at sea. I wish to inform you that your housekeeper fills me with anxiety like John Knox. I fear she is rather narrow, which arises from an ignorance of culture and the Italian scene. Pray ask her not to say, "You know your way up," when I call at your house at Cramond. She should take me up and show me in. Her knees are not stiff. She is only pretending that they are. I love to hear you singing "Hey Johnnie Cope." But were I to receive a proposal of marriage tomorrow from the Lord Lyon King of Arms I would decline it. Allow me, in conclusion, to congratulate you warmly upon your sexual intercourse, as well as your singing.

With fondest joy, Jean Brodie