Nice one. If it was for me, I'd have gone for slightly more processing power (PIV rather than AMD), but I reckon that that'll be more than adequate for your Mum's needs.
And don't mind that, given the nature of these things, you'll be able to buy better spec for the same money in six months' or a year's time — if you thought that way you'd never buy!
If you didn't get speakers with it, I'd pop around to your local PC World/Currys/Dixons, etc. — at this time of year, you'll probably find lots of 'manager's specials' at silly prices.