There is some kind of guideline, whether ethical or professional, about therapists not cajoling clients into continuing therapy. I guess there's a conflict of interest in trying to get someone to keep coming considering that the T is getting paid. Some of them just don't contact clients as a rule, they wait for clients to contact them to schedule appointments. I wouldn't take her non-response personally.

Another possibility is that she is a bit disorganized? If you feel like seeing her wasn't helping you a great deal, and if she was unreliable about scheduling and communicating about scheduling, then perhaps it would be better to try again with someone else?