About this subject I don't think she is unhappy, that's not the word I'd use at least. At the show she was radiant, of course there was a huge part of beig emotional, but she was happy, you can see it in the way she was playfull with interviewers and how she reacted to all the praise and love from the other models. Sha said that this year the connection with the models was amzing, that they really felt more like a team ten before. This is a huge moment of transition of her, she had a huge VS contract that was the base where in 20 years she built her career on, and now it's gone. She has been a VS lingerie model and spokeperson for more then half her life, growing from a kid to a woman and a mother, all with that element being a costant. She realizes that there is a transition in place for her right now, we don't know how big or small, but it is a moment of chance netherless.
My opinion on the career transition is that it will be small at least for now, she clearly still wants to be a model, the recent campaigns and the Puma contract, certainly more then a one season only job, are an index of that. She is damn good at her job, and requested and praised worldwide, so why stop it? About the lingerie thing idk, maybe some collaborations for campaigns, since she liked to do lingerie shoots in the past and even admitted more then once to missing that. Or for magazines and editorials. But doing lingerie shows, idk, I hope she does them again in the future because she is amazing. I hope she does something new too, maybe linked to acting or tv since she said she liked her past experiences in that.
Anyway, as long as she does something she loves I'm happy.