My girlfriend of six months, who previously only hassled me during her period, took care of my place while I was at work, constantly wanted sex, has started causing more problems. She has become critical of my aloof attitude and "disregard for her feelings". After she started hassling me more often I started putting more focus back on myself (I never gave her 100% to be clear) and telling her no more often. She feels that I do not listen or care about her anymore. By ignoring her complaints or telling her she is being petulant and childish (she threw a literal temper tantrum pounding hands and feet on the floor) I am trying to keep my own frame and sense of self, but I'm wearing thin.

How do you express that you care and want to be with someone, while still maintaining frame and not just giving in to childish complaints.

I have reached a bit of an impasse here, trying to rectify what I want to do and what the prevailing Redpill insight and my own observations up to this point point to.

Edit: thank you all for your insight, a healthy mix of all of them worked wonders on the conversation tonight, we'll see if it sticks.