Is it permissible to question the justice of Allah Almighty in creating a girl with this appearance, which is not considered "beautiful" according to societal standards? And does this justify societal rejection of her, bearing in mind that Islam encouraged marrying the beautiful?

All of Allah's creation is beautiful, and Allah may test His servant for a wisdom and benefit. Beauty and ugliness, like health and sickness, and wealth and poverty, are divisions of Allah's provision; they are not proof of His love or His wrath. Allah Almighty said: (As for man, when his Lord tests him and honors him and bestows favors upon him, he says, "My Lord has honored me." But when He tests him and restricts his provision for him, he says, "My Lord has humiliated me." No! Rather, you do not honor the orphan). The believer is content, patient, and seeks reward from Allah, while the discontented complains to his Lord. True beauty lies in faith and righteous deeds, not in outward appearance. A Muslim must be content with Allah's decree and destiny, and not extend his gaze to the adornments of this world, for Allah's provision is better and more enduring. The happiness of the believer lies in his good opinion of his Lord, his contentment with His choice, and his asking for His bounty. Allah's blessings are innumerable, and Satan beautifies for the servant discontentment with Allah's decree.