Drama with David

So I saw my sister at the donut shop this morning and she tells me that there was a really bad situation at her house last night involving David and the mother of his child.  We spoke for a few minutes in the parking lot of the donut shop and from what Isa was able to tell me, things escalated to the point where the police was called.

It wasn't very clear to me EXACTLY WHY they fought this time around except for the fact that David got some advice from other family members about going on Disability or some such thing.

Its clear that things have reached an untenable situation with these people and something needs to be done.  A family intervention may be required before my sister ends up in the hospital in a complete nervous collapse.

God, what a clusterfuck.  And I don't see an easy or efficient way out of this, considering the fact that there is an infant involved.