 Ruby arrives in Summer Bay following the death of her mother Elsie Buckton . She and her boyfriend Pat Jenkins ( Lachlan Jeffrey ) spend a few weeks together until she realises it is not going to work out , he leaves her . Her friends Jai Fernandez ( Jordan Rodrigues ) and Annie , who are in a relationship , make her feel lonely so she convinces herself she loves Miles . When her father Ross Buckton is diagnosed with Alzheimer 's , she finds it hard to cope . She contacts - via the internet - classmate Matthew Lyons ( Ross Pirelli ) , a wayward teenager , and reveals he is experiencing the same with his grandmother . When she finds out it is Matthew , she thinks he has lied and photographs him undressed and displays them . She then realises he was telling the truth , he would not forgive her and decides to exact revenge . 
