Waking Up Is The Hardest Part

For those of you that don't know, my mom died about 5 years ago. I have dreams about her occasionally, and I have very mixed feelings about those dreams. This morning I had a dream about her; I don't really remember a lot of the details except that we were looking at pictures of the two of us (which there aren't a lot of because she was always the one taking the pictures) from when I was younger. While I love getting the chance to see her face again and feel like I'm getting to spend time with her again, I also hate it at the same time. I hate waking up! When I wake up in the middle of one of those dreams I get so mad, and I just want to go back to sleep so I can see her face and be with her again. I so desperately try to remember every single detail of the dream, and it upsets me even more when I can't. I want to remember every single detail because as time passes my memory of my mom fades little by little and I hate that the most! I will never forget the things my mom did for me, the way she loved me unconditionally with all her heart, the things she did for others, etc. but it's the little things in my memory that fade like her smell and the sound her voice. Those things I think are looked over because who really thinks that they will forget the way their own mom's voice sounded? I wish there was a way to preserve memories in our brain...make it so there was no possible way you could forget. They say we only use approx. 10% of our brain...so why not use the other 90% as a permanent storage facility that is impenetrable by time or other memories, and we can access it whenever we want with no worries of any part of the memory being erased.
I just wish I wouldn't have to rely on dreams to see her; I, like a lot of people who have lost a loved one, wish she wouldn't have had to die in the first place.