 Barker worked principally in <unk> with pen @-@ and @-@ ink , but she was equally competent in black @-@ and @-@ white , in oils , and in <unk> . She carried a <unk> with her for capturing interesting children . She once indicated , " I have always tried to paint instinctively in a way that comes naturally to me , without any real thought or attention to artistic theories . " 
