This is a good beginning to some really great things to come! You gave enough descriptions to keep me reading and explained everything perfectly. The characters are compelling and curious. Why did Rebecca choose Melissa to take the book? Was Melissa the only person to have been in the house since Rebecca died?
Obviously, she will read the diary in the next chapter/story but what will it say. I am definitely going to have to keep going. The mystery is what happens next. Grammatical errors, I didn't notice any nor spelling mistakes.
Something you might think about is when Mr. Miller is attaching the tow rope you might pause for memory effect. Just slow it down a smidgen, small pause. Her would be my take. Just an idea.

"You went inside that house?" he asked. "You're braver than I am. When I was a little kid, my older brothers used to scare me with stories about it being haunted. It still gives me the creeps." He shivered. "Are you sure you saw a light? The place has been abandoned almost fifty years." He paused and looked over the corn field. "Come on, let's get your car out of this mud. You can follow me to my house and borrow a pair of my wife's shoes." (keep going with the story)