When she came to say goodbye,the family asked her to settle an argument they'd been having over exactly what advice she had given.
当她来道别时,（那）家人请她就一直以来悬而未决的争论给出一个建议.
:)是给出建议吗 还是 为她曾经所给的建议而引起的争论最终下一个定论嗯 这句话是比较纠结，但是好像没有“她曾经所给的建议而引起的争论”这一层意思，总体看意译会更好一些 请她就一直以来悬而未决的争论下一个定论