Perhaps I have a different tactic. There are two ways to deal with this:
1) Deny it and try to fight back
2) Apologize if comments were misunderstood, clarify, make a comment about the heroism and bravery of our troops and make a donation - a high ground maneuver.
If he does number 2, he kills her entire argument. Her argument is that Trump was insensitive, didn’t care, and so forth. Trump comes out the next day, clarifies the statement, shows he is compassionate, and shows he cares - that all the reports and the Congresswoman’s remarks were a hullaballoo about nothing. It helps the widow, and Trump looks good. It ends the media story in a day.
I look at this in terms of the casual American out there who sees this story on the news and doesn’t follow it in depth. I think doing option two is going to appeal more to them and help Trump from a political standpoint a lot more than an 8 day feud culminating in the widow coming forth.
1) Denying it is the truth.
2) Apologizing for it is the untruth, a lie.
Trump was elected on his promise that when he gets hit, he hits back, and twice as hard. From that promise, he is disassembling the RINO camp and draining the swamp.
This widow and Whacky Wild Wilson are the swamp.