Why nobody help Sara to find diagon alley

Sara didn't get her letter when she was 11 years old,she entered magical world just when she had a beautiful magical dream in one mysterious silvery night..after she prepared all her stuff to get ready and buy all her MAGICAL items from Diagon alley she was sad why most of the witches and wizards got physical letter or someone came to visit them and help them to enter diagon alley but she has to find her way back to wizardry world alone..she was just using her strong feelings and intuition to find out the truth and travel wizardry world for new adventure..she was thinking can I really alone find that magical alley and buy all my MAGICAL items for new beginning?she had to travel all the way from Germany to London and nobody paid for her journey..she was doing it all on her risk and faith !!!she trusting her intuition and dreams more than anything,but she knew is a biggest risk in her life And if she fail this risk she will never be happy in future ،.. beacuse for her magic was everything!!!