Desire for children after abortion

Q: I'm 27 years old.  I had two abortions under some circumstances which were absolutely sin and I keep asking forgiveness from Allah for it. Now, I'm married and have one baby girl of 3 years old and we want to have another baby but it's not happening anymore. I am starting to get into depression as I'm scared that this is the punishment from Allah.

I have come to a conclusion that everybody has a number of kids allotted from Allah but since I have aborted two babies and I got one so now I may not have any baby in my life anymore, is this thought correct?  But honestly when I had this baby girl the only thing I thought is that may be Allah forgave me that's why he blessed us with his most precious gift - a girl. 

Is there any kaffarra for these sins and that Allah bless me with more kids?

Breaking a promise

Q: If I made a promise to Allah Ta'ala that, if I was to be cured from this illness, I would never do a particular sin again. However when you get better you fall into that type of sin again.

Now does this mean I will be included in the verse of surah tawbah verse 75-77 who Allah Ta'ala punished with hypocrisy as a result of breaking a promise with Allah Almighty. I am really worried that I  am going to be punished with hypocrisy and die a hypocrite.

Getting money from social services

Q: I have been paying taxes for 5 years close to 1200 to 1400 dollars a Month.

I got laid off and now im taking social services until I find a job because I had no savings. I get about 780 a month. I gave them my friends basement address but I live with my parents. My friend even signed the letter. The thing is the amount I get for rent, is that halaal for me or do I have to make my friend make intention of it being a girl?

Opening a snooker shop

Q:

1. If I open a snooker shop, will that money be halal or haram as I know in Islam betting is haram but in this case we are not telling the players who will come to my shop to play snooker that you have to bet but more then 90% of the boys that play bet, or both of them agree to pay money. So is it still haram or halal?

2. If I wrote on a wall that betting is not allowed here then will it be enough to make snooker shop money halal?

Hijaab

Q:

1. Is it mandatory to wear hijab for a grown up Muslim woman and what exactly is Hijab?

2. Is it enough to cover her satar (hair and body except the face, hands (fingers)) or is it a compulsion to wear a black colour burkha as we wear in India?

3. What is ruling regarding talking to men of the opposite gender?

4. What if a woman is a civil servant wherein she has to follow a dress code, What is the ruling in such a condition?