Repenting for one's past sins

Q: I have a personally sensitive issue. When I was a teenager, I engaged in inappropriate sexual touching with a few girls one of whom was my cousin while she was sleeping. Now that I'm an adult and a bit wiser, I feel terribly guilty. I have apologized to my cousin but without telling her what I did. How can I find peace?

Second jamaat in the musjid

Q: If due to rain in certain parts of the world, Maghrib and Isha’ are prayed together in the masjid. Would it be permissible for Hanafis to conduct a second congregational Isha’ prayer in that masjid, because it is forbidden to conduct second congregation prayer in a masjid?

Meaning of a Hadith

Q: There is a Hadith in which it is mentioned:

Allah Ta'ala will gather all the human beings of early generations as well as later generations on one plain so that the announcer will be able to make them all hear his voice and the watcher will be able to see all of them. Does the word announcer and watcher refer to Allah? Also, is Allah attributes with a voice?