Leek has been known to use already existing prints and op-shop images as a starting point for some of her works.
Leek has noted that "sometimes - and this has been talked about a lot - I use amateur paintings, just so I have something to work against.
I might smear them out, or paint them really fast, or put a lot of detail in them, playing around with those kinds of things as a way to get started." Her subject matter has included house pets, sunsets and sunrises, homes and cottages, chimney's and horses.
Leek's focus has shifted from representation to Cubism and into Abstraction and thus has reflected the path of 20th century art.