Who is Denis Daigle from The Broken Cord and what is their importance?

Denis Daigle is the social worker who helps Michael with the adoptions of Adam, Sava and Madeline. Denis seems surprised when Michael is approved to adopt Adam and more so when he is granted permission to adopt a second child. When Michael says that he wants to also adopt a daughter and wants her to be young enough to fit in with the boys, Denis is skeptical and seems incredibly surprised later when he calls to say there is a ten-month-old girl available for Michael.