The YLQualification syllabus is on there, so yes.
It will slo allow her to browse the other senior section opportunities/awards/ideas available to her.
Is £5 an affordable cost to your unit? If so, it might help her that your unit buys it, direct from trading.
You could get by with a unit copy if funds don't stretch- all the info is downloadable it's just the official record book for QG (and I'm assuming the YLQ now has a book, although it didn't when I last used a SS cd, I just printed off the syllabus and ticked off next to things when I'd done them!)
I seem to remember a lot of silhouettes and weird music, but newer editions might not do that! I didn't really use it for anything other than printing the YLQ off, but I guess it depends what they want to do from the choices available (if anything)
i would wait a while and see how keen she is. it also has the record book with it so its worth £5 if they are going to use it. we have had 2 out of 8 yl use it so at the moment are thinking it may not be the best use of money.