I can send emails to the therapists with an understanding that she wouldn't respond. If I really need some kind of response or reassurance, I would let her know, and she would respond with a short message. But the therapist wouldn't get into therapy content through text or email. I don't pay her to read those emails or texts. Sometimes I free associate between sessions, so I type them, and send them over to her. We would then talk about it in session if I want to.

It seems that some therapists charge for all outside contact, but some don't. If I were you, I would bring up my need, and see how she wants to proceed with it and any transaction. I don't think that you have to take care of your therapist's feelings about what might be too much for her. I think that therapists are the ones who would let us know when something is too much and needs to be charged for.