Re: what to do over univited long staying guest…
OK, well, your cousin being 30 doesn’t change all the other points I mentioned in my post.
I know you won’t like to hear this but the bottom line is that you and your husband do not own the house. The house belongs to your parents. Your parents have allowed you and your husband to move in with them. Similarly, they are allowing your cousin to move in with them. The “reasons” are different in the 2 situations…you moved in b/c of your pregnancy. The cousin is moving in because of her education/lack of money.
The only major difference in this situation is that you and your husband can CHOOSE to move out and get a apartment nearby. I don’t remember you ever mentioning any major financial issues in your marriage so I’m assuming your husband makes enough money to be able to afford a place of your own. On the other hand, according to your own post, the cousin/her family has “money issues”.
Even though your relationship with the owners of the house is much closer than the cousin (ie. you’re their daughter)…the bottom line is that both you and the cousin are guests in your parents house. BOTH of you should be grareful to the owners of the house for allowing you to stay in their home in your time of need (ie. you b/c of your pregnancy and your cousin for education/lack of money). BOTH of you, as long term guests in your parents house, need to treat each other and everyone else in the house with respect.