I should think that alot of her 'shaking' and 'rage' comes from the frustration felt when faced with passive aggresive behaviour.
Avooidance of issues, and the harm done to realtionships through this, may not be as blatantly obvious as some one screaming or shouting or in refusal to help, but it can be just as destructive in the hurt, anger, frustration and feelings of non acknowledge ment that it causes.
To respond 'oh doing the ironing is helpful' is just not attempting to take into account why this leaves her shaking with anger, and to state 'worse things happen' is true, obvious, and applicable to many relationship issues, but totally unhelpful and adding to the non acknowledgemnt of the feelings of thr OP.
I have felt myself screaming to be heard in my head when my DH responds with 'but the lawn needed cutting' with faux naivety when he knows I am at the point of loosing it emotionally over an issue in our realtionship that I feel is being ignored or sidelined.
This issues lead to the failure of marriages just as much as more obvious aggressive behaviour. Believe me.
You are just further, ignoring and sideleining the OP's emotions, with a ludicrous 'worse things happen' retort, and ignoring the complexity of the emotions and realtinship.
Yes helpful ways to deal with it are good, and what she needs, but 'I wish my DH would do our ironing' is just simplistic, superfical, and unkind.
'Worse things happen' could be the response to about 85% of issues poele want to discuss on MN. The fact worse things happen, may be true, but it does not invalidate poepls feelingsor there very real ongoing concerns.