Joining salaahs

Q:

1. Is our namaz valid if the Imaam combines two namaazes (zuhr-asr or maghrib-isha) as per Hambali maslak?

2. What is the procedure to be followed by a Hanafi follower if the bus driver does not stop for the maghrib prayer because the Hambali people do combine the namaazes later during isha?

Imaam forgetting to make sajdah tilaawat in salaah

Q:

1. The imaam of my masjid recited Surah Al Alaq in Fajr salaah, but forgot to do sajdah tilaawat in the salaah. Will I have to repeat the salaah or should I only do the sajdah tilaawah by myself?

2. What should be done if the imaam forgets to do sajdah tilaawah?

3. Is it important to mention the name of the surah in the niyyah for sajdah tilaawah? Is just mentioning that 'I intend to do sajdah tilaawah of the ayat I heard this morning' enough?

Keeping silent to avoid an argument

Q: If a mother in law discusses something with her daughter in law and later her son confronts his wife in front of his mother demanding to know what the mother said, the wife remains silent out of respect for the mother in law and also to prevent an argument from taking place between the mother and son. The husband later accuses his wife of being disrespectful for not telling him despite her explaining her reasoning. He still won't see things from her perspective. Please advise if she was disrespectful towards her husband and what should she do if faced with a similar situation in the future?

N.B. The husband never admits to being wrong and cannot be reasoned with.

Mispronouncing letters in salaah

Q: In sanna, instead of saying "Wata Baarakas mooka" I recited "Wata baarakas buka".

In Surah Ikhlaas instead of saying "QulhuwAllah" I recited "QulhuAllah".

In attahiyyaat I didn't pronounce the ha sound from throat.

Instead of pronouncing مُقِيمَ الصَّلَاةِ I pronounced "muqeemus salati".

In the tasbeeh of rukoo and sajdah I said "rabbial" instead of "rabbiyal" (I added yal instead of al) and I didn't pronounce the ha sound of these tasbeehaat from the throat.

I made all these mistakes without knowing it and I have made these mistakes in all my previous prayer since I started. Do I have to repeat all those prayers? 

Remaining silent in order to avoid fights

Q: I would like to know the ruling on remaining silent to avoid conflict with family members and my mother.

1. Whenever I say anything it's always used against me so I would like to know if I remain silent and just greet would that be permissible?

2. My mother curses me while angry and I don't want this to happen. Please advice.

3. My mother always questions why I go for Umrah because of 1 bad character trait which I have. Which is remaining silent when angry... her anger stems whenever I ask her to join me for Umrah. I thought that taking one's parent for Umrah is meritorious... Am I wrong in requesting this? Please advice on duas for family unity.