well he knew she dident have a phone on her and he thught she ha left the house so what point would there be texting her.
He knew she had left the house?
This appeal documentation appears to be indicating that Luke was waiting for Jodie to turn up at his house
https://www.scotcourts.gov.uk/search-judgments/judgment?id=e2988aa6-8980-69d2-b500-ff0000d74aa7 He waited at the house for the deceased. He left at around 1730 or 1740, as she had not arrived. He waited at the entrance to the estate on Newbattle Road, moving between that point and a track at Barndale Cottages, closer to the west end of the path. He had walked further along the road at one point to see if he could see the deceased. As he was standing at Barndale Cottages he had seen boys whom he knew from school. He had waited for around 45 minutes. Thereafter, he had wandered into Newbattle Abbey walking up and down a path, wasting time. He then contacted David High and made arrangements to meet him.
[29] The appellant thought that something must have happened which meant that the deceased was not coming out, such as that she had forgotten, changed her mind, been grounded, or met somebody.His mother (in one of the video's) stated that they had no firm plans to meet however, the above suggests they did - so when she didn't turn up why wouldn't he have texted her again. Also, Luke could have instigated her to delete the texts before she left the house.