It's a shame she couldn't be persuaded to go for seperates. £500 could buy you a pretty decent setup of turntable, amp and speakers and the sound would be sooo much better than an all in one unit.
That project Juke would be ideal with the speakers at £428 for a quick solution.
https://homeavdirect.co.uk/pro-ject-juke-box-e-all-in-one-turntable-q-acoustics-3010-speakers
For great service and advice, you can't beat giving richer sounds a call, they'd sort her out a decent setup within budget
https://www.richersounds.com/