Husband saying "I am done with you, its over" while discussing divorce

Q: My brothers wife confesed to have feeling for the guy down the road. He issued a talaaq raji with a condition saying if she has any communication then it takes effect. She violated the talaaq.

He issued a second talaaq raji without any condition after which he took her back by hugging her .When it was told to her that she must check the valadity of her nikaah she mentioned that on several occasaion while discussing there marriage my brother told her ,"I am done with you , it over " . Does there nikaah terminate completly .Does she have to remarry someone before they get back together . If they live together are they in sin.

Using a microphone for Salaah

Q: If the Imam recites Qirat by mouth and there is only 3 lines (saffs) of musallees and the sound by mouth reaches till the 20th line (saff), but still he recites qirat using the microphone and the sound of the loud speaker reaches 5 decibles which can be heard in the building beyond the mosque. The sound level for the 1st line (saff) of musallees is about 95 decibles (dB).

1. Though the mouth is enough, still using the mike and loud speaker, is it tasarruf?

2. When the sound level (dB) goes up beyond the permissible limit (60 dB) what should we do?

3. During the Fajr prayer when the qirat is going on so loudly, it is very difficult to pray sunnat of Fajr.

4. Though the mouth is enough, still using the loud speaker, is it riya?

Sleeping on one's stomach involuntarily

Q: It is said in the sunnah that it is better to fall asleep on the right side, and that it is disadvised to sleep on the stomach because in the Hadith, it is said:

عَنْ أَبِي هُرَيْرَةَ، قَالَ : رَأَى رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ رَجُلًا مُضْطَجِعًا عَلَى بَطْنِهِ فَقَالَ : إِنَّ هَذِهِ ضِجْعَةٌ لَا يُحِبُّهَا اللَّهُ

Similarly, we hear that it is not advisable to sleep on the left side. Now, if someone starts to lie on the right side. Then, involuntarily during his sleeping, he turns on the left side, or puts himself on the stomatch, will she have the totality of the rewards or not? 

Asking forgiveness from one's relatives

Q: My niece had a proposal fixed n kept meeting in my house.i ws not well yet i cooperated. But she n her mom came late n the boyside came earlier than scheduled time. my husband had gone for namaz. i panicked when she came it was late n i as a hypoglaemic lost my temper due to hunger attack n told her something loudly in kitchen which were insulting words to the boy which he heard in the hall and broke the proposed engagement.since then i m begging for forgiveness from niece her mother,the boy .offering gold n money n even sawab of my umra but my niece refuses to forgive me n has orderd my sister to break relationship wit me.she curses me n uses bad words n filthy language for me n my innocent girl. What should i do now? I m taking treatment for anger issue. I m feeling very sad and depressed.