Nothing wrong with the first sentence, the 'said' after Rowan's speech should be a capital, remember '.', '!' and '?' count as full stops, there fore any letter after them should be capitals. That includes when they're in speech marks
Um, no. Regardless if your dialogue ends with a question mark, comma, or exclamation point, if your speech tag is "said Rowan" (or any variation of that), then the letter after the dialogue should remain uncapped as its CONTINUING with the dialogue. What you're saying is that "said Rowan" is its own, complete sentence, which it's not.
The only time you would capitalize a sentence after dialogue is when the bit after/before the dialogue is a complete sentence. These usually exclude the "speech tag" (he said, she replied, they screamed, so on).
Ex) "Is he here yet?" he asked.
"Is he here yet?" He tapped his foot impatiently, waiting for an answer.
Not trying to be a ***** (even though it sounds like it,) but it's wrong information you're telling the kid.