This is so fantastic!! And the fact that she trusted you to tell you that she wanted to ML but just didn't feel up to it, and you ACCEPTED that and told her THANK YOU, I FEEL LOVED for what you DID offer -- those are Words of Affirmation!! You encouraged her and made her feel loved and secure in return.
Words of Affirmation are as simple, but yet as hard for you to notice, as the AOSs. Use them sparringly, just as you use spices, but when you deliver them, do so with honesty and genuiness, like you did last night.