You have to add that file in the same directory location in Gillion child theme like following.
I have attached sample child theme in which i have overwritten Blog Slider element.
This is my child theme… mods in theme-child root works perfectly (header.php page-blog.php) but nothing happens in subfolders (inc/widgets/posts-slider/views/widget.php) when i try to remove the title (or edit it)
I’m sorry… i’ve attached a new mod that i’ve tried to do with no results too…
This is the situation
The first installation was made in a subfolder http://www.site.com/new. Now is on the root www.site.com/ with no results. It could help you?
It seems you are using different element or widget than the blog slider visual composer element as show in the attached screenshot.
This topic is for blog slider visual composer element so if you are using different element then to help us keep support thread separates could you please create your own thread for your question instead of replying on others thread as it makes the thread messy and hard to read.
If you want to you can also add reference of this thread in your newly created thread.
We would be more than happy to help you on your new thread.