I think she needs to look at a combination of both factors - degree and place.
If she wants to work in the traditional HofA world - eg big auction house internships, she will likely need an MA in HofA (and another language), so the UG almost doesn't matter. Indeed, if she wants to work in the primary art market, Bristol (and I'm sure Edinburgh) tick the box for 'posh' unis where she will find alumni (not necessarily HofA) who will recognise her journey.
For sure, UEA for eg has an amazing collection. But is she interested in a more dynamic practice? For example, Bristol HofA curator module has ties with traditional galleries such as the RWA but also street art, community spaces, National Trust properties etc, so a 'hands on' and eclectic approach to accessing art.
As a straw poll of DD's particular peers from Bristol, two are working in 'traditional' art spaces (one in a gallery and one in an artist's studio), at least three have gone into the civil service. DD actually went into finance. (Finance and art are very happy bedfellows!)
The main takeaway is that the course was good, but the city was even better and her student experience was happy and fulfilling, leading to great contacts and a confidence going out in the world. The graduate careers service is also very proactive.
Bottom line is, you could be on the most prestigious course in the world, but if your environment isn't right, it's not going to fly, so she should think about where she wants to live for the next three years.