Sounds like you have a frustrating relationship with your mother because she forgets events that are important to you. I don't really know what to tell you...we all have frustrations with our parents, in different ways. I can't say that I've ever been really frustrated about something like this but my mom is different than yours.

Maybe there is a reason that your mom "forgets" those things. I think selective memory might be an ego defense....maybe those times that were painful to you were also painful to her so she avoids thinking about it. I'm just guessing, but what wingin'it said was good, that you can't really control her or what she remembers.