The same quote can be found in DA 824 where it is prefaced with these words: "In the Saviour's manner of healing there were lessons for His
disciples." And the chapter is entitled, "Go Teach All Nations," so it is all about how we are to minister in this world of sin after Calvary and Pentecost.
I do not agree with the tone of SDAminister's first post. And this is a sensitive time, when someone has terminal cancer. But if the cancer is indeed terminal, it does seem odd to me to put one's faith in "systemic treatment," hoping for "containment," while at the same time calling for fasting and prayer. If we seek God's blessing, we shouldn't simultaneously violate His expressed will, lest we fall into presumption.
It would then be a question of whether chemotherapy for terminal cancer is an exception to DA 824. Apparently, 3ABN isn't so sure that it is, or isn't so sure that their readers will think so. Otherwise, they would have said that Mollie was having "chemotherapy" rather than "systemic treatment."