Art historian: This painting, purportedly by Mary Cassatt, is a forgery  Although the canvas and other materials are consistent with most of Cassatt' s work, and the subject matter is similar to that of Cassatt' s finest paintings, the brush style of this painting is not found in any work known to be Cassatt' s
Hence this painting is definitely not a genuine Cassatt
No painter other than Cassatt would be able to match Cassatt's brush style perfectly.