As aggravating as the calls from your wife appear to be, they are still attempts on her part to keep communication open. Even if she isn't able to form that thought in her head at the moment. It doesn't seem she lets much time pass before she gets in touch with you for some reason or other. IMO this is good on one had, she obviously wants to stay in touch, it is not so good as far as you being able to detach.
You sound as if you still need to set boundaries as far as your wife's calls. Financial or kids. Period. She wanted to be on her own, let her. If her printer goes out, call the Geek Squad. Don't be pulled into pointless angry arguments. They will not help either of you. JMO