Returning to uni as a mature student

I went to uni straight from school and college at 18. It ended up not being what i wanted/expected and I struggled with my grades and mental health - this was years ago and support for such was not advertised and I didn't understand MH much myself. I ended up having to redo my 2nd year part time and due to this decided to move back home and commute. During this time I found myself in an abusive rship and suffered severe depression, anxiety and substance abuse. I was not allowed to leave the house and I ultimately missed my resit exams in the summer. Due to this I failed and could no longer return to uni, I then lost my dad shortly after so was not in a position to fight for this. I spoke to a member of SFE who said I may be eligible for 2 years of student finance. My question is, would I be able to apply for an extra year given the circumstances? I can obtain evidence via drs notes and a death certificate but would it be worth it or a waste of time? I'm 27 now and know what I want to pursue but need a degree. I am in a good mental space to work hard for this, what do you think? Any help is appreciated!!