You can minimize the risk of you being hurt by clearly stating your desires to your T. Tell her that your birthday is next week and that you want her to acknowledge it in some way like by saying Happy Birthday. Tell her flat out that it is important to you that she does it, instead of hoping she does it based on what she could deduce from your past session. I suggest being so frank as a way to aviod a rupture as you say that is not what you want to deal with now.

Sure it would be great if she read bewteen the lines, and responded as you hope. Then if she did she cared if she didn't her care is in question. The theraputic relationship is different then typical social relationships and the reasonable expections of friends. That is not to say it is unreasonabl for you to want to hear happy B day. Why put yourself though that tell her it's important to you for HER to say happy birthday. It sounds like it could be an interesting conversation about feelings of being special and where those gernerate. Hope that helps.