Kimberly,
That’s a fantastic question. Since there isn’t a centralized admin for the donation widget, it can be difficult to sync multiple instances of the widget.
One way to make that easier would be to use a plugin called Content Aware Sidebars. This plugin will allow you to create new widget areas on you site that either replace existing ones or add to them.
What you could do is create a new widget area (sidebar) called Donations for example. Then cause it to be added to the sidebars on your blog and default sidebar views and also to the Home Bottom. That way you only have one instance of the widget to update. If I was setting that up, that’s whow I would probably go about it.
If I can help with anything, just let me know.
Have a great week,
Bill