Daughter

Yes it is permissible to leave your daughter with her father.

Wassalam.

Your responsibility is to look after your parents and serve them as a humble servant and try your best to please them and obey their orders in lawful matters. Your responsibility as their only son is more than the responsibility of your sister. Doing your best and serving your parents does not mean that you ignore the rights of your wife. Her rights on you remain preserved, although there should not be any contradiction between complete service to your parents and fulfilling the rights of your wife, but never do anything which can harm the feelings of your parents. They are your gate to paradise and eternal success

. Wassalam 

1. The share of the permanent wife from her deceased husband is one eighth from the wealth he left

2. The remaining seven eighths is the right of the sons and daughters of the deceased which must be distributed among them in equal portions shares of one share to every daughter and two shares to every son
 

3. If the mother passes away after inheriting from her husband, all her wealth should be distributed among her sons and daughter in the same portions of one share for every daughter and two shares for every son. It should be mentioned that these shares are proposing that the deceased did not leave a living father or mother otherwise they will also be entitled to inherit from their son or daughter.

Wassalaam

1. Not all Jinns are bad but there are among Jinns believers as well as non believers as we read in Quran :( There are among us some righteous and some contrary, we are groups having different ways). Sura Al-Jinn, verse 11.

2. Shaytan (Satan) does not like us obeying Allah, but he can not freely harm us just because of our worshiping Allah as far as we seek help and protection from Allah (SWT). Ahlul Bayt (AS) and their families were the most devout servants of Allah (SWT) ,yet Shayan could not harm them.

3. Sleep disturbance might have different reasons but we have in the authentic narrations guidelines for avoiding disturbance like: 1. Performing Wudhu before going to bed. 2. Reciting Ayatul Kursi and Sura Falaq and Sura Naas before sleeping.

3. Reciting Tasdeeq of Fatimah (AS) before sleeping.

4. Reciting Estighfaar and Salawaat.

5. Reciting يفعل الله ما يشاء بقدرته ويُحكِم ما يريد بعزَّته

YAF'ALOLLAH MAA YASHAA BIQODRATIH WA YUHKIMU MAA YUREEDU BI'IZZATIH.

Wassalam.

Yes, you can gift your daughter a house while you are alive. The house ownership will then be transferred from you to your daughter and it will not be part of your estate after your life and one from your family will have right on that house but your daughter only whom you have gifted.

'Wassalam.

Shaikh Abbas Al-Qummi , the well known scholars and Muhaddith has mentioned in his book Muntaqa Al-Aamaal , V.1 , P.460 has mentioned among the married daughters of Imam Al-Hasan Al-Mujtaba (AS): the forth married daughter: Roqayyah, who got married  to Amro ibn Munthir Ibn Zagreb Al-Awwaam.

Wassalam.

Widowed husband has share of the wealth of his late wife. If she has inherited from her father, her husband has share in her estate. If she had any children then her husband gets one quarter but if she had no children at all neither from him or from previous marriage then her husband gets half of whatever she left.

'Wassalam.

This is a matter of different narrations in Sunni and Shia books. The Prophet Muhammad (SAWA) had many fostered or adopted daughters who was looked at as his daughters according to Arab society before Islam. Many persons mixed between the real daughter (Fatimah) and the fostered and adopted daughters.

Authetuc narrations confirm that the real daughter of the Prophet and Khadija is Fatimah, while other daughters were fostered or adopted daughters. Lady Khadija (AS) had a sister Haala Bint Khowailid, who passed away leaving her daughter who were been looked after by Khadija and the Prophet (SAWA).

There is a nice book with evidence from Sunni books, written by Allama Sayyed Jafar Murtadha in this subject. بنات النبي أم ربائبه 

You can read it on this website www.mezan.net

Wassalam.

This claim is not true. Great Sadat scholars including Maraaje' of Taqleed, have allowed marriage of their daughters with non Sayyed Momins. The claim mentioned in your question came from certain culture with no concrete evidence in religion.

'Wassalam.