Psychology graduates are two-a-penny (sorry), so if she's keen on developing a career in psychology she'll also need to consider the costs of further professional training/education following graduation.
This can be substantial, but could be worthwhile if she's ultimately wanting to work in clinical, forensic, research or educational psychology. But if she's person-focused and academically minded, it could be a perfect choice for her.
All of those routes are (usually) Masters then Doctoral routes, perfect for an academic mind, but she needs a clear financial plan, to be honest. Doctoral routes are also highly competitive, but there's a link below which might help.
https://www.nihr.ac.uk/doctoral-opportunities
She might also consider a career in Public Health, which can pay very well, and also opens the door to working internationally, e.g. UN, WHO etc. Again this is a very long path, but definitely worth considering.
https://www.healthcareers.nhs.uk/career-planning/study-and-training/graduate-training-opportunities/specialty-training-public-health
This might seem far away - she needs to obtain her degree first! - and ultimately it's up to her of course, but it does no harm for mum to be coaching in the background. I eventually did a doctorate (different subject) and didn't have the advantage of an engaged and interested parent. So, good luck.