but honestly as a reader this irritates the crap out of me, so as a writer, i should be able to put my punctuation wherever the heck I please. If a comma feels right, or a period feels right, I should be able to take my pick.
Guys, stop letting 'strong' confuse you. It's just put there to differentiate from the normalcy of poorly written female characters. A female character who is physically strong can be 'weak' if that's her only defining trait. Too often people confuse a masculine female with "strong" which is entirely counterproductive.