With regard her mum not knowing, it was a very fast paced situation. If memory serves me it was only 2 1/2 hours from Alesha being reported missing to being found and her mum lived in Airdrie.
*Like others said, she may not have been home or not answering her phone.
I blame the people that made it obvious on the grandmothers fb that Alesha had been found dead for her mother finding out that*
You are right it was all over facebook by the time i loggedon in the morning i saw her mums post on the grans face which had been shared The poor girl was distraught but it was really early in the morning she maybe had been asleep andnot heard her phone or had it off