I’m not so sure she’s the only one who taught you how to write Marce, your writing has improved quite a bit even in the time I’ve known you. Did you ever find out if her other students got the same contract? Were their books with her more successful? Inquiring minds want to know :)
Ultimately, sending you that contract without an explanation is on Freya, as is the cruelty of her comment to you. Bad Freya. Bad.