Factors that make Qurbaani waajib

Q: When performing Tamattu or Qiraan Hajj, will the Damm-e-Shukr suffice for one’s qurbaani for Eidul Adha, or will one’s qurbaani have to be done separately? 

Q: I am a 25 year old unmarried woman (will get married in a few months). My parents passed away a few years ago and I don't have any other siblings. I live with a relative in very good condition. I am presently working with a medium level salary and I have a little inherited gold and a savings as well.

Please tell me if Qurbani is fardh on me? Some people say it's not because I'm an unmarried orphan, some say it is because I'm independent and earning myself.

Q:

1. Is one qurbani valid for whole family living under one roof?

2. I have heard that qurbani is wajib but I have seen many aalim's videos who say qurbani is Sunnat-e-Ebrahimi. So if a person does not do it, its not a sin as its a sunnah act, is it true?

3. I do not earn and I am dependent on my father but I did have some savings, was qurbani wajib on me though I gave that money to my mother 3 days before eid as I feared sin. 

Q: Can we give the money of a qurbaani animal to a poor needy widow instead of doing the qurbaani ourselves or do we the qurbani and then sell the meat and give the amount to her?

Q: If qurbaani is fardh on a person but he does not have enough wealth to make it over here but he will be able to send it to India. Should he carry out qurbaani or what should he do? 

Q: I purchased a goat for Qurbani, tonight it had been murdered by dogs. Now is it mandatory to purchase another goat ?

Q: Is qurbani on the day of eidul adha farz, wajib, sunnut or mustahab?

Q: Can I do Qurbaani for my deceased parents this year without doing Qurbaani for myself. I did Qurbaani last year for myself.

Q: Can we donate money on the day of Eid instead of performing Qurbaani? If not, please explain the reason?

Q: What is the ruling if a qurbani animal is lost or injured after purchasing?