Winding up an estate

Q: I've got a question and situation pertaining to inheritance and estate.

My mother in-law has passed on and wasn't married ANC contract but rather in COP. Half the property goes to my father in-law. To make the winding up of the estate easy, the 3 brother's decided to legally put the entire property on my father in-laws name. Now that my father in-law wants the property to be sorted out, the issue is that the youngest brother and his wife live with my father in-law. The property is valued around R1.1 million. The youngest brother who isn't very stable wishes to buy the elder and middle brother's shares at 150k each as that's all he can afford and wishes to pay monthly whatever little he can afford. 

What's the correct shariah process to follow since it's on my father in-laws name legally? My husband wishes to just give the shares and say that don't pay monthly but whenever he has means later in life then he can give it to him. My husband himself doesn't own a property or anything so should he not accept his shares so that he can put it aside for hajj or as a deposit for our own house? Tomorrow if anything happens, my husband says I should go with my 3 kids to my parent's as he has nothing.

What should be done to please Allah and what process should be followed ? The father in-law does live with the youngest son that wants to buy the house but he is ever complaining about him and my sister in-law to us which isn't right at all.

Will the smell of mazi on one's linen render it impure?

Q:

1. I was wondering if the pillows that have been stained by the smell of madhiy through clothes but not directly stained by the moisture itself are impure? (There's no smell on them anymore). I just embarrassingly knew about madhiy this week and I'm trying to repent and avoid sinning thoughts. I masturbate quite often using my pillows before and I'm worried about other things that could have been stained by the smell from the pillows. 

2. I haven't washed anything on my bed and I'm still using them for sleeping and I couldn't possibly wash everything as I don't know which thing could also have been stained by the smell. As they are no visible traces of impurity, I let them dry under the sun is this okay?

3. And I'm also having doubts as sometimes when my feet and hands are wet I get on the bed and I'm wondering if my feet and hands become napaak? My indoor cat also loves to lay on my bed and walk around the house, does this mean I have to wash her?