She was one of the most revered poets of the Classical world. Her poems, like all of the famous poems of the period, were read and usually memorized by the educated Greeks and Romans. However, after the Empire became Christian, the monks who copied texts decided that hers were too immoral and they destroyed basically all of them. That's why, if we can find her works, we find them reused in another function or in garbage heaps in Egypt.
Odd. The snippets posted here don't sound that much different than the Song of Solomon.