Thanks all for the additional replies to the thread
As above I went for the 64Gb Mini geoffj linked to. the small size seems great for my wife, it will fit better in hand and also in bags etc. Certainly i’ve always been surprised at the weight of a full size ipad, we’ll see if the lack of retina screen is an issue or not, I don’t think she’ll be too bothered, at least I hope not.
she’s maxed out her 16gb iphone with pictures, apps etc as the kids also use it so having a lot of space will be a good thing. She’s not especially techy so she’s better off without needing external storage.
Its been a tough year for us, we’ve both been through the wringer a bit, she has been awesome throughout it all so its nice to be able to surprise her with something she’s wanted for a long time 🙂