What you say is true, and I think she does expect out of you,
but maybe not a relationship.
She is somebody you keep in contact with and moreover, someone you
have sex with. So definitely this person would be closer to you
than most other people would be. So it's more likely that the two
of you would know things about each other that others won't. I also
have female friends who tell me everything, things they won't tell
the family, things about their ex, but i don't sleep with
them.
She would definitely be expecting a higher level of intimacy out of
you, maybe not as a special someone but let's put it this way, the
two of you have a beyond 'normal' friendship.
Lighten up and just see how the next session goes. Maybe just
monitor her behaviour and be a little more sensitive to what she
might be thinking. Just no point being too uptight about it.
Good that you're careful though, at least you're being mindful
about hurting her feelings.
