Could it be(I'm just making a very wild guessing and I'm not saying is due to this, hahaha), could it be one of her parent or grandparent last time got some "issues/grudges" with PAP when Spore was still part of Malaysia during those 1963 to 1965 years??
I heard from a elderly malaysian-chinese before, they said during the 1963-1965 period in Malaysia, got some malaysian-chinese are very very Anti-PAP and these group of malaysian-chinese actually support the malaysian malay-dominated government more. He said it is not true that the overwhelming majority of malaysian-chinese support PAP during the 1963-1965 period in Malaysia.
This elderly malaysian-chinese he even said during the 1963-1965 merger period, he said some malaysian-chinese from a particular chinese-based party in malaysia is very anti-PAP and they want the PAP out of malaysia. This He said one, not I say har.
I know quite a number of Chinese were made stateless during those years and lost out on many of the rights of citizenship. Could her parents be made stateless for whatever reasons and this is the cause of her resentfulness?