Except the landlord herself can give evidence on the stand as proof. Or anyone else who saw the previous condition of the property.
I don't understand why you absolutely need the photos or ingoing report.
Who said that it restricts the total claim that can be made because of an owner's failure to mitigate?
And also that it has to go to a higher court to make the full claim?
I don't think either of those things are true off the top of my head.
