Thanks for your answer.
What I did was the following:
-Copy the footer.php from the parent theme to the child-theme.
– In the child theme I create: child-theme/inc/hooks.
– In child-theme/inc/hooks I copied the footer.php from the parent theme.
– In child-theme/inc I copy the file init.php
– I modify the lines in init.php
— require trailingslashit(get_stylesheet_directory_uri()).’inc/hooks/footer.php’;
It was what I did, but the theme reflects to the parent theme.
thanks