Its real, you can check their social media handle, https://www.facebook.com/diyaindiaorg/ they are very quick to answer. Also, you can confirm about your donation and where your donated money was used in which way...they will tell you everything about it. You can also check their work on their social media page.
You can visit there website https://www.diyaindia.org/ and they are so transparent about their donation system that they also offer an option to donate directly to the victim or the purpose ( donate directly to the hospital or educational institute etc )