https://www.womensaction.sg/article/migration
“For licensed brothels in Geylang, the workers are given two-year contracts, and when the contract is up, they will have a lifetime travel ban."
But buddy, what's the point of bringing her back? If you wanna have a good time just go to where she is, enjoy and come back. If you are trying to create some life with her, then it might be a good idea to think again.