A confusion I see a lot of in manuscripts is the capitalization--or not--of Mom/Dad/Mother/Father.
The general rule is that if you can use a proper name to replace the word, then it should be capitalized.
A) “Hey, Mom,” he yelled.
B) “Hey, mom,” he yelled.
Try: “Hey, Susan,” he yelled.
So, in this case, A is correct--capitalized.
A) Jenny took her Dad to the grocery store.
B) Jenny took her dad to the grocery store.
Try: Jenny took her Frank to the grocery store.
LOL, nope, that doesn’t sound right at all. In this case, B is correct--not capitalized.
So, for a quick reference whether to capitalize or not, simply read the sentence out loud using a proper name in place of the parental term of choice.