How old is your DD and what will she using it for? I know the terminology can be baffling, but if you compare a laptop to, say, a car, people can provide some pointers to what to look for. e.g.
Little run-around for short trips and few passengers = pretty well any new laptop is good for web browsing, email, word processing etc. Probably an i3 processor. up to £250ish
Family car for longer trips and 4 passengers = more powerful laptop, something used for business, with solid state drive (SSD), 8GB memory, 1 TB drive, fast i5 processor. under £1000.
Super-car for driving on the Autobahn at 200 kmph = High-end 'gamers' laptop, fastest i7 processor, lots of memory, high-end graphics card. lots of ££££.
Please be aware that a lot of retailers now buy in 'old' stuff, especially for sales. By old, I don't mean 2nd hand, I mean stuff made 2/3 years ago that for some reason didn't sell.