Well it's not that the fl is a Buddha, but because at first, when she help cure the spike master Mu suffering from, it's to repay kindness and she's the only girl there and she doesn't want to be raped. Secondly, I think I forgot the reason but from what I remember, she helped that young master Chen at the train because she somewhat knew them and because that young master is only choking before but got worst because of interference by Mrs. Jiang. Also, you said it yourself, "majority of drs become drs not bec they want to help people", so there are still some that would gladly help if they are sure about their abilities, that can save a favor from others afterall. Well, if you're not talking about this two, then I guess I have no more to say.