Ship = her
Harbor = the comfort & stable zones in her life - beloved by parents, friends, & perhaps even you a Singaporean.
Where a Ship is meant to be = She is not an object, but a fellow Human with hopes, dreams & aspirations of a better life
No woman is the same. It will take decades to understand womanhood, due to their upbringing & environment - local, Asia & Western ideals.
Relationships is based upon trust. That she gave you this quote goes to show that she is likes you but still undecided, & comprehensible as she just gotten out a serious committed relationship & is not so ready to make the same mistakes again.
If you are serious about her, then she would need assurances that you would not be her mistake again. No Being promised that life will be a bed of roses daily, thus each would have to be prepared to make compromises for the long journey of life together, beginning with honesty at the start - nothing hidden, you are who you are & not an object to impress her or others.
If you are not serious or prepared, then tell her so, so that there would be no false hopes or expectations from you or from each other, & she/you are free to find another better. Life is too short to live on false hopes or regrets....