She was having an enormously difficult time resolving her grief.
--根据前面语境,由于主人公母亲的猝然离世,使得主人公悲痛欲绝
翻译：直译--就是母亲离世给她造成的悲痛,使她极其备受煎熬；
意译就是：她很长时间就沉浸在极度悲痛欲绝里(无法自拔）.