How to insert nodes into a Views result
You may want to use hook_views_pre_execute (see example) or hook_views_post_render() where you can add arbitrarily content (new rows or html code) into the view to fake the nodes.

Please check the following code example to give you some idea.

You may also compare how other Views-based modules doing non-database query results, such as Search API Views or YQL Views Query Backend.