Help me help my parents watch me graduate

I am a graduate from the University of London and the school is sending me to the main campus in London for my graduation next year.

My parents have been my rock for years through mental breakdowns in JC, stressing out over honour classes and tolerating my midnight studying. My mum has never been to Europe and i would like to take this opportunity to let her watch me graduate and travel around. I am a fresh grad and barely have enough money to pay my tuition fees let alone pay for air tickets and lodging for two in UK.

Mum has never seen or even been to a graduation ceremony and this will be her first time. It would be a huge dream come true for her while for me, ill get to point at her and tell my cohort what an amazing mother she is.