She sacrifice her comfort zone in her home town all the way to here,
sacrifice all the soft skill she can learn and just work in TFC.

Please stand in her shoes, she came here with a plan to earn money, not doing charity.
Open what own business if her working experience is only with working in TFC?

TFC good example? she just trying to tell you it is exactly fine to invest on people like her.

But anyways when you are blinded by love you hardly understand whoever trying to convince you here,
but it will all start to makes sense when you start moving on.

In commercial sense, they know very well how to get in to your soft spots, they know well about your past encounter and how to turn in to something you want so they can ride along with your wealth, once captured your heart now realize you do not have the wealth they look for then move on till they found one.

Easier to tell lies than putting in to action, anyone can give promise what they can become, but committing is another thing.

Compared to those local you have met, they just being more upfront to you about their requirements and not waste each other's time. Meanwhile this Vietmoi just approach differently but in the end still left you after finding you did not meet her requirements.

My take is just tidy up yourself, be the person a girl looking for and eventually you will meet someone.

Hard pill to swallow, only time can heal.