I go into Speech options and Siri appears


If you have the Sierra OSX and you select Speech Options in Read&Write and the Siri window appears like below, this is because you do not have the most up to date version of Read&Write for Mac.

 

If you go to our Essentials  website you can download our most up to date version, Read&Write for Mac 6.0.6 which is fully compatible with Sierra.