I've read the whole thread, so I can talk ********.....
I think your daughters' 12 year old friend's mother feels lucky to have got your attention. And you are trying to add some sort of legitimacy to this whole thing by seeking advice here - since you already knew the solution (as you say: to get orange to confirm the contract start date and therefore warranty).
You didn't say 'single-mother' so I cheekily made a comment about the father doing a runner as an extreme solution to the problem.
I'm sorry, if this problem is bigger than it appears on this thread, but to me it's a little amusing. To me, a family that does not have a lot of money (assuming money is tight) but can have sky has got some priorities wrong.