It is difficult to find a domestic violence organization or group that uses the term domestic in tandem with financial abuse. Arguably, this is not because the two are unrelated but rather because the documentation offered by these organizations deals with one topic at a time instead of grouping subjects together. For example, an article focusing on financial or economic abuse attempts to educate readers about this topic in as comprehensive manner as possible. Articles dealing with domestic violence take the same approach and may not mention financial abuse in the same report.
Recently, discussion of domestic violence has been seen everywhere, from gossip columns to mainstream news publications. Why the sudden increase in visibility? Allegations involving celebrities.
Domestic violence is never OK. But not every instance of violence in family interactions amounts to domestic violence. That being so, you would expect that it would be easier to know where the line is so that it no one would cross it.