Yeah, it's hard to tell from that pic, but the shape seems totally wrong and is that damage on the heel? Not sure about the red, definitely should be brighter than the pic, but maybe it's just the shadow/colours.
But honestly, find out what website she got them from, even if it's kinda a "wow, that sounds great, where did you get them from" type enquiry.
There are honestly hundreds of fake websites, and only a handful of genuine ones, particularly in the UK.
I would say the cheapest (apart from eBay, which is also infested with fakes) is probably TheOutnet, but that's a classic style she's wearing and rarely, if ever go on sale (let alone for 75% off), and I would personally go to a hat factory and eat every hat there if they're real.