Responses
*You can read chapters 50 & 58 here.*
https://kunmanga.com/manga/im-a-worthless-stepmother-but-i-love-my-family-madly/chapter-50/
In all the sites that 60 was available, it was repeated so I'm guessing the current English translation is updated till 59.
Also you can reread some chapters. I'm not sure if it was 56 and 57 that have missing pages.
Where's chapter 50?