Please help with a Christian group split belief.

We were in a Bible study and when we got to the prayer request part, one of our members was asking for prayer for their MIL who has just been moved to hospice. The MIL is a Christian but since going into hospice she has signed a DNR. The son and his other siblings are upset because they feel it is like su****e. About 1/3 of the group agreed with him, while the others , including my husband and I said it isn't. Of course the bible study is people from 3 or 4 different churches. I have tried to find things in scripture that agree or disagree. Just wanting to get some other views.