[Vuejs]-How to re-render parent from child component

You shouldn’t manually re-render any parent components. All updates should be initialized on your reactive data’s changes. So make sure the data your parent component depends on is updated when the child component’s data is updated.
It could be done with events popping up to the parent components.
BUT. With a deep level of nesting I use either provide/inject when parent/child components are tightly bound together (the child component couldn’t exist without the parent) or some global/store reactive object.
Anyway there’s no clear answer because there’s no code provided.
Maybe first try provide in the parent and inject in the child.