You are giving few details to enable a detailed answer. It all depends on whether or not the buyer (granddaughter) acquires mineral rights and what percentage. No one should buy substantial acreage without determining what fractional mineral rights, if any, are included. If buyer gets 100% unleased minerals, then she can make all relevant decisions. If buyer gets no minerals, then she is at mercy of oil company - some companies are willing to talk about well locations and roads and others are not. If seller had previously reserved right to designate surface use, even if owning no minerals, then buyer will assume this right. If the buyer gets no minerals, then buyer will not get any royalties. Buyer will be paid surface damages for well pad, pipelines, electric lines, etc. I suggest that they carefully read the title opinion and consult an attorney to understand the situation.