There is absolutely nothing wrong with faith healing. There is absolutely nothing wrong with using essential oils for the health of you, your family, and friends. I have faith and I also am well educated in the use of herbs and essential oils. I have never heard of "anointing" with essential oils in the sense of giving a blessing and that could be coming from an outsider who doesn't understand how essential oils work. Just like once, when my children were in school, another child's mother, who was very against Latter-day Saints, called CPS and told them we were forcing our children to have seances...we were inviting spirits in our home??? i.e Family Prayer--"Let thy spirit dwell in our home". Knowledge is wonderful and the spirit can direct you by your faith with the use of that knowledge. However, there is much wrong when you take those gifts and blessings that come from the Lord and begin to set yourself up as a "healer" . That particular problem falls into the same types of groups of visionaries and end of timers who exploit others for money.
If there are sisters here that feel that blessing their child is wrong, I feel very sorry for them. Faith is a power that we have access to. The miracles don't come if we don't use that faith.