For the first time faced with.
Created a child theme for wordpress theme, which has its widgets, lying in a separate folder widgets and plugins using functions in an include file functions.php
When needed to change the functionality of one of the widgets, copy the file with it in the same folder of the child theme
But he's not podzharivayte! All the amendments which I carried in it on the side, as they say. But if the parent theme to rule - everything is OK. (the child theme is working!)
Tell me, what am I doing wrong?