I would like to see that statement in a cout transcript and hear what kind of question was asked..
The links are here.
Should be easy for you to find.
Apparently they were given scenarios such as Terri developing diabetes and requiring amputation of a limb or limbs, in order to save her life. Gangrene in a loved one apparently is not acceptable to them. I haven't read anything about "ripping out" her heart, and I suspect the Schindlers would forego chopping her arms and legs off themselves and allow surgeons to do any necessary surgery.
In contrast, Michael's telling doctors to withhold antibiotics for a urinary infection and later, deliberately banning dental care, including not treating tooth infections in order to hasten Terri's "death process" doesn't seem ghoulish to some.