Thank you so much for your help and corrections. I really appreciate it a lot and yes, you are right, I am very focused on learning turkish eventhough it is so challenging... after 3 years I forgot most of it but I am willing to make it better and better...now regarding my mistakes :
So , the right one is DILEK´IN or Dileg´in as someone of you wrote? , Actually I checked some old notes and in my writings it said that for example Mehmet´s is in writing MEHMED´IN so I must understand then that Proper nouns do not change when written?
And also the possessive/genitive case so it is suffix -IN with the possessor and -I with the possessed item , right? but what happnens if you have many cases of ´s in one sentence like " Elif ´s mother´s brother´s car is green " (exaggerated I know but just to know ) or for example " Elif ´s family´s house isn´t theirs"
Thank you so much for helping me again,glad to see you all as I said,
Dilara. 
Dileğ´in reflects how we say it as there is k to ğ mutation when a word ending with k added a suffix starting with a consonant (probably you know it). Maybe it´s better to write it as Dilek´in to not change the way it is written. I don´t know the exact rule for this one and I don´t have a grammer book around to check. But many times you may run into "Dileğ´in" form as well.
etc.