Should I change how the paragraphs are divided? Should I combine the last 2 sentences?

Turning the keys to the ignition and pressing the gas does nothing. Jackie opens the car door to go look under the hood. She used to be a mechanic after all, but is a little rusty.

She walks through the mud, carefully looking all over the car. She shakes her head as if nothing is wrong. What on earth are going to do?

Jackie pulls out her phone and searches for a tow truck to call. We're hours away from civilization. It could take all day to get one out here.