What you are saying sounds very weird to me. I got a mortgage and bought a house this year and two of the most important things I was asked was proof that I was a permanent and full time employee and my 3 payslips.
I seriously doubt someone that has a contract that is set to end on a certain date would get a mortgage since they cannot guarantee they will continue paying for 20-35 years. Especially in an industry where there is great uncertainty.
Edit: Als this is Carrie we are talking about. She never admitted her brother bought her apartment either.
She's bullshitting people talking about saving her whole life.
So you don't need proof, just common sense.