I can't imagine an intervention being allowed in an ICU. Mostly because of the acuity of all the patients there. Vistors are usually only allowed for brief visits and two at a time. They also have to limit traffic with consideration to other patients. Once she is out of ICU, maybe that could happen.
It's just not that kind of setting.
I think this is an issue that gets lost in the acuity of today. Once they are stable, they get transferred out of the unit, then sometimes an intervention gets lost. I think it boils down to "the right place and time for such an intervention".
The reason she is there may be due to a behavior that's killing her, the ICU is for life and death medical interventions, but it is a medical environment. Intervention should come later.
Think os it this way, would you lecture a heart attack patient on the evils of french fries while he was in ICU. No.