I think the act of crying, of letting it out, can be healing in and of itself. I feel like my T's office is a safe place to cry (though I still sometimes apologize for it). But if at one time you were getting comfort from your T and suddenly aren't, I can definitely see why that woudl be unsettling. You should ask your T about it. Maybe she's hoping you'll be able to comfort yourself, but if so, she needs to tell you that.