Some excellent points above. She may be testing you in a closed enviornment, seeing how you are really. When she would observe your changes before, maybe she had a nagging doubt that you were putting on a show for her. With you there, she has more time to see what you're really like and maybe that's the last bit of reassurance she needs to really commit. You know this but I'll say it anyway because it always helps me to hear something even if I already know it: you're on course, you're doing great, don't give up before the miracle happens.