I rarely disagree with you, but I'll be backing her to win 2-0 until wheels fall off, in every major this season.
She was 10-0 in sets, conceding 14 *games* in those 5 matches, prior to semi final against Keys (who nearly made Dougie a millionaire)
She's young but she's been around. She's still top notch, but the longer your pro career goes, the more choices you will have to make. I think she's good/smart enough to save the best of her for majors.