three children killed in lake crash have been farewelled .
their tiny white coffins were wheeled into the church in werribee .
mother akon guode and father joseph tito manyang attended .
five-year-old awel , who survived the crash was at the funeral .
their mother was released from police custody .
she crashed 4wd into a melbourne lake .
children 's father says ms guode ` did n't feel herself ' as she was driving .