The sentences

Hello,

Could you please correct these sentences?

1".I will buy this dress no matter how much it would cost me. The dress would be mine and he would be mine aswell."

2.Spending two ours every evening alone to her heart's content was her only condition from the start of their life together.

3."What if he won't understand me?"/"What if he doesn't understand?"

4.Her condition was approved of by her husband.

5Once,while being alone in their room she heard a phone call. Somebody called her husband.

6.While lying in the bath, she heard something that was like the rustling of leaves and squeaking of a door as well. However, she didn't pay attention to it.

7."You show me that?"

8.He knew that she read only society columns.

9."You can destroy me here, but what about seeing me outside in the streets or your pictures?"

10."You got so used to me."

11."Let me explain you everything."

12."If it had not been for this failure you would never know anything (about it)."