Canon has quite a number of Powershot cameos with WiFi... but these connect to an iOS or Android smart-phone and you use the smart-phone to upload the images to your website of choice. The camera does not *directly* upload to social media sites. Canon makes one point & shoot which can upload directly to Facebook (and nothing else other than Facebook).
But what we don't know... is her budget. That makes it difficult to make a specific recommendation. Canon has a number of WiFi enabled cameras. A Canon Powershot G-16 is a high-end advanced point & shoot... at around $500 USD. On the low end, you can get a WiFi enabled point & shoot for about $150 USD. Again... these cameras have WiFi but do not directly upload to the internet. They presume you either have a connected device such as a smartphone to handle that.
Nikon has some Coolpix models which you can add wireless... but it's not included. E.g. you buy a module that plugs into the camera and adds the wireless capability.
Another option is the "Eye-Fi" cards. This is an SD card that you can slip into many non-wireless cameras and the card itself has wireless networking. The card transfers the images to the internet and/or to your phone, tablet, etc. and they have cloud-based storage. I've always found the Eye-Fi card to be painfully slow for RAW images (which is primarily what I shoot) but ok for JPEG images (because JPEG files are much smaller so the transfer times don't take too long.). My cameras try to save battery power by putting the radio on the Eye-Fi card to sleep until I've taken new images and the camera goes "idle" for at least 4-5 seconds. At that point the card wakes up and starts transferring images (if you start to shoot more images while it's still transferring it will immediately halt the transfer and let you shoot... but it does not transfer images WHILE you are are shooting at the same time. )
There will, of course, be lots of other options...
Here's a link to
B&H Photo's list of point & shoots filtered to show only cameras which also include a WiFi feature... and there are 112 of them on that list.
Point & Shoot Cameras | B&H Photo Video
I don't know what the prices are in Scotland, but
B&H Photo and
Adorama are in New York and if that's where she's going, she might just want to walk into their store where she can see them all, get some help, and buy one. I have not personally been to one of their stores (only online). I hear it's crazy busy.