Can you please help me last night I had a dream about my mum she passed away 14 years ago I dreamt that she came back to life?

http://www.spiritcommunity.com/dreams/contentsa.php

if she was a born again Christian she will come back to life.

13 Brothers and sisters, we do not want you to be uninformed about those who sleep in death, so that you do not grieve like the rest of mankind, who have no hope. 14 For we believe that Jesus died and rose again, and so we believe that God will bring with Jesus those who have fallen asleep in him. 15 According to the Lord’s word, we tell you that we who are still alive, who are left until the coming of the Lord, will certainly not precede those who have fallen asleep. 16 For the Lord himself will come down from heaven, with a loud command, with the voice of the archangel and with the trumpet call of God, and the dead in Christ will rise first. 17 After that, we who are still alive and are left will be caught up together with them in the clouds to meet the Lord in the air. And so we will be with the Lord forever. 18 Therefore encourage one another with these words. 1. Thessalonians 4

Sometimes after passing on, the soul is permitted to give a prayer for a relative. It may be that her soul is developed to the place where she was permitted to pray directly for you.

Related: "The Great Divorce" shows this post-passing learning development clearly. "Testimony of Light" is also interesting.