Desktop: The text is a bit close to her face. The next line is capitalized, even though gramatically it should not be. I think the two hypens should be an em dash. Maybe differ the font weights for visual interest.
Mobile: Same feedback as Desktop. The white is easier to read here than the black on desktop.
There is no punctuation for the quote. Add an em dash or en dash instead of two hypens. Also vary font weights.
Same feedback as Postcard 2, besides the punctuation. White on color looks good since there is a decent amount of contrast!