To the original poster, I wanted to suggest a few things to you.

If you are feeling that there are not enough boundaries or they aren't clear, I'd suggest:

1. That you ask your therapist for clearer boundaries(ex. contact between sessions). If she doesn't provide clearer boundaries, ask her to explain the rationale for having such open boundaries.
2. Decide for yourself what you think you need and come up with a plan of action (eg. Do you want to cut out texting for any random reason? Perhaps you can limit yourself to a specific number of texts a week and then scale it back to only texting for appointment scheduling.)