Thanks for the recommendations Ijuin and Star Rider. I was thinking 8 GB on the RAM (maybe more if I can spare some money), but I wasn't sure about the need for a graphics card or what would be a decent processor.
I prefer to use AMD in a
desktop build for myself, because I don't mind tweaking around a bit, and it's more bang for the buck. However, as far as laptops go I'd definitely stick with intel. My last AMD build lasted almost ten years(May 2006/September 2015, only swapping videocards and hard drives, and it was only the limitation of 4GB of memory due to the old CPU's architecture(Athlon64x2 "Toledo" socket 939) that pretty much enforced me to upgrade it.
CPU:
AMD is targeted at the lower end of the laptop segment, and that also means the laptop in general is a cheaper quality build. I have at this moment five laptops lying around based on AMD APU's I got from friends after restoring the data, all with thesame issue; mainboard fried just out of the 2-years standard warranty. Importing a new mainboard for these machines would bring me at a total of €150 euro's at least, while just getting a brandnew, a more modern "successor" machine is available off the shelves for under €300,-. And I really would not recommend overclocking a laptop APU, the housing and it's coolant system are not something you can easily mod or replace in a laptop. I'd say go with an Intel I5 too, true I7 systems are also on the market, but clunky and expensive, avoid the i7Vpro.
Graphics:
If the system offers an optional AMD R5 R250 graphics module, avoid it, had one in a business system over a year ago, and the difference between using that module or disabling it was under 5%. Tried a vanilla install and set everything up by hand, same story, I just bought a nice AMD sticker. Nvidia's mobile graphics will have a bigger impact.
Also watch the screen panel, it's not much use to go with a system that can handle 1920x1080 or more if the screen panel on the system can only display 1366x768.
Memory(and pretty much the only thing you'd be able to upgrade):
A decision you really want to make is the ram configuration, when you purchase them, you can often see the memory layout in the system; in general you only have two slots. If your laptops would have 2 4gb modules, you'd end up throwing stuff away when upgrading. Try to get them both with single 8gb modules(they'll be identical), when you upgrade you can give her a cheap random third party 8gb module, and place both original 8GB modules in your system, giving you the dual channel functionality as an extra free performance boost. You might instead(depending on how the memory module market goes), choose to buy 2x16gb for yourself, and install both original 8GB modules in her system, win-win.
Storage:
Try to get your system outfitted with an SSD(or replace the hard drive yourself if that turns out cheaper). If you tend to use lots of documents or large chunks of data, purchase a seperate NAS(or build one out of your old PC), and put it on a wired connection, leaving space on the laptop. Then you should have enough space to do pretty much everything with a 320 or even 250gb SSD.