She has active profiles on several dating sites now.
Good news is...she may not be in an A where she thinks he's ready to walk down the aisle with her b/c they're so in loooooove. Bad news is....she's looking and making it known she's available.
My suggestion is to make plans to be busy on the 14th and not be available to answer any of her TM or calls. In fact, get out of the house all weekend and find something to do that you haven't done in a long time. Something that has no connection to her (her relatives, her friends, etc.). Do something that will help get your blood flowing and put some life back into your soul.
I'm so sorry that you are facing this situation and feeling so much pain. It is important that you take very good care of yourself....physically, emotionally, spiritually. Whatever you enjoy that gives you inspiration....get it. Keep getting it, b/c you've just lost a parent....and that much alone can throw you into serious depression. Since you already have problems with depression, please do whatever you can do to get better.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!
