Hey mate. I'm sorry for your loss. However nothing in this universe is ever lost for real... I am a psychic and I can read peoples minds and all those things you know and I can tell you this: She is NOT gone! She will never be gone...
So here is something that undeniable and that will ease your pain:
In the beginning there was the Big Bang. The Big Bang means the Big Fuck. A big fuck between two energies, the masculine and the feminine. These two energies we (in essence) call "God" and "Goddess".
NOW... This is the crucial part. When everything "started" there was only one energy. Feminine energy! Feminine energy is unbound by anything and it is the dark matter we see when we look out into space - imagine a black canvas. There is MUCH more of "unwritten data", aka dark matter, than actual DATA (the lights from suns or living beings or plants etc etc). The DATA is CREATED on PURPOSE by the MASCULINE Energy - which is CREATIVE in it's healthy expression. Sexually deviant in it's unhealthy expression. Emotions and Sex are very connected. SEX means Soul Energy eXchange. Data transmitted between souls... Nooooooooow. If everything came from that ONE EXPLOSION, right...? Then that means that we are all the same person. We are all both capable of being God or the De-will - which btw are BALANCE (LOVE, GOD) and IMBALANCE (HATE, DEVIL). It's about FREE WILL.
You can contact your mother again if you really want - as I've mentioned, it's about FREE WILL. You can do this through listening to your Intuition. I speak with the dead and I can confirm what I am saying here is real. Fuck what others say imho, because most people here (95%) don't give a shit about anybody except themselves (stuck in childhood traumas) - stuck in the Offsprings of energies that came AFTER the first Feminine (Water) and Masculine (Fire) energies. I.E Air (Mental Energy aka Ego) or Earth (Physical energy aka materialism). Most people would say I'm crazy, but when I meet them face to face I can see exactly who they are as opposed to what they pretend they are - liars can only lie to liars. I tell them straight up "I know you do this and that, why should I ever respect you when you act like this? yet you condemn me when I am coming from my heart?" - they always get quiet. Nobody can compete with truth because to compete there has to be rules and Truth is Ruleless. It doesn't care about your egoistic view of things! It just doesn't.

So yeah... Don't look at this as an end. Look at this as an opportunity to re-connect with your mother inside yourself (feminie side in you) and then later you will be able to meet your physical mother again - but in a different "place" that I cannot describe. If you need my assistance, I work with this and I can help you. Just hit me up with a PM. Goes for anybody reading this actually... I know my shit and I am not interested in arguments because I will come out on top... As I said I walk in truth and the truth doesn't give a shit about opinions! In Sweden Opinion is translated as "Å-sikt". "Sikt" meaning "View" and "Å" is the 2nd last Letter in our Language. Meaning "you're not looking all around, since you exclude some letters", in essence... Also I don't need to prove myself to anyone that has already decided what the world is without real-search (as opposed to re-search). But if you want my help I could help you. Just let me know. I know all of this probably sounds so confusing, but I condenced a lot of information that one understands with experience into words. It's kinda hard and I don't want to write 10 pages! One Love <3