A writing which has some Quranic verses within other text does not fall under the rulings of a mushaf. It is permitted to touch it without wudu. Evidence for that includes the fact that the Prophet ﷺ sent a letter to Heraclius which had an ayah of the Quran in it.
قال ابن عباس: أخبرني أبو سفيان بن حرب: أن هرقل دعا ترجمانه، ثم دعا بكتاب النبي صلى الله عليه وسلم فقرأه: بسم الله الرحمن الرحيم، من محمد، عبد الله ورسوله، إلى هرقل، و: {يا أهل الكتاب تعالوا إلى كلمة سواء بيننا وبينكم} [آل عمران: 64] الآية
Ibn 'Abbas narrated:
Abu Sufyan bin Harb told me that Heraclius called for his translator and then asked for the letter of the Prophet (ﷺ), and the former read it (thus):
In the Name of Allah, the Most Gracious, the Merciful. (This letter is) from Muhammad bin 'Abdullah, to Heraclius. "O people of the Scripture (Jews and Christians): Come to a word that is just between us and you that we worship none but Allah..." (V.3:64)
— Bukhari