assalam o alaikum
I was married and with in two months of my marriage my self respect was hurt 2-3 times by my mother in law, instead of talking directly to her ( as she elderly and deserves respect) I consulted my wife and had along discussion which resulted in arguments and also some hard statements from my end like
1. 'if u dont get my point no need to come back'
2. 'she(my wife) said i will see she (mother in law) will not behave such way in future' on that i said 'if she behave such way i will marry other women'.
When she communicated all this to her parents and relatives they took her back and declared that they have taken Khula and put her in iddat preriod. When I heard this I had a talk with my father in law and made him understand that Khula is not possible without husband's concern, but they were not ready to listen anything and After few months they remarried her to one of her cousin.
1. Is this Khula valid?
2. Was the remarrying her without proper khula results in sin for me in sight of Allah?
3. Please let me know from knowledge of Quran & Ahaadith how guilty I am from above scenario in sight of Allah & if I am guilty what is the repentance/solution? as I cannot talaq her now as she had already remarried and they are not ready to answer to any of our questions.