Suratji,
Call your t on Monday and say this;

"T.....I have called you and left 3 messages now and they have all been unreturned. I can not be certain that I requested you to call me back. I am calling today specifically to ask you to call me as soon as possible. Thank. Suratji"

Sitting with all this til friday seems pretty unrealistic especially since it would only take a 5 minute conversation to put you at ease until your next appointment.

Just sit in front of this on PC when you make the call and read. Don't think about it, don't feel about it. Just read the monolog and hang up.

This would be a great practice for you to ask her for something (something that is not unreasonable by the way) and see how she responds to you.