Good to see that, once again, a classic example of joined up government. But, enough of the carping (at least for now… 😈 ).
Taking a punt, straight in the deep end, I’d probably go for this. It seems clear that the monies paid in respect of the husband is not that of the clmt.
That, to my mind, leaves two options, both being inferences:
1) Treat the clmt’s income as the drawings from the joint account; but only to the level of the Applicable Amount; or
2) Treat the clmt’s income as being equal to that of the dependancy addition. This is probably less strong, as it contradicts the suggestion that the addition is the income of her husband.
As an aside, it seems the clmt probably needs to get independent advice about the income for both herself and her husband.
Hope this helps.