Maximize the impact of davening

A daughter begs a doctor to come to her sick mother, and he keeps pausing to ask which tie goes better with which jacket. Something similar sits in Parshas Vayetzei. Rachel cries out to Yaakov for children, and he answers her sharply, with Rashi spelling out his words. How could Yaakov speak that way to a wife in pain, and why is his answer not even fully accurate? The Malbim on Chana's tefillah points to what Yaakov may have wanted Rachel to feel, and it reaches every request we bring to Hashem.