Artie, I agree you should just call or email and ask for a session. I don't think that's stalking at all. And I think it would be better for you to just talk it through with her.

Though I do think she should have responded to the apology in some way. Maybe she was waiting for you to ask for a session? I know therapists aren't supposed to "chase" clients, so she might have felt if she was offering, you'd feel obligated to do so. Especially if it was in response to you apologizing. So she's leaving it up to you to ask.