[3] In 1887, she, Mummery and Alexander Burgener climbed the Jungfrau, Zinalrothorn, Dreieckhorn, and the Taschorn, and on 15 July made the first ascent of the Teufelsgrat (the Devil's Ridge) in the process.

[8] She wrote that: The slopes of the Breithorn and the snows of the Weiss Thor are usually supposed to mark the limit of ascents suitable to the weaker sex-indeed, strong prejudices are apt to be aroused the moment a woman attempts any more formidable sort of mountaineering.

.The masculine mind, however, is with rare exceptions, imbued with the idea that a woman is not a fit comrade for steep ice or precipitous rock, and in consequence, holds it as an article of faith that her climbing should be done by Mark Twain's method, and that she should be satisfied with watching through a telescope some weedy and invertebrate masher being hauled up a steep peak by a couple of burly guides, or by listening to this same masher when, on his return, he lisps out with a sickening drawl the many perils he has encountered.

[1] Like many women mountaineers in the nineteenth century, such as Lily Bristow and Margaret Jackson, Petherick's achievements were little recognised at the time.

Indeed, her husband is noted for saying that "All mountains appear doomed to pass through the stages: an inaccessible peak, the hardest climb in the Alps, an easy day for a lady.