If someone sues you, you will need to hire an attorney. An attorney can represent you in a court and make sure your best interests are served.
Metallica
FrugooScape was sued by Jagex for alleged copyright infringement. Jagex alleged that the client used on FrugooScape was their property.
If an infringement case is brought, the financial situation of the infringer is immaterial: they can be sued for up to $30,000 per use in the US.
In 2009, Sophia Stewart successfully sued the makers of The Matrix for infringement of her 1981 story The Third Eye.
Not from an already published game, you can't. You can get sued for copyright infringement.
be sued in court for copyright infringement
The company Apple recently lost the lawsuit against Mexican manufacturer IFone. The lawsuit was for copyright infringement over Apple's product IPhone.
A person or company who violates copyright can be sued by the copyright holder.
Yes you can be sued and whether or not you can afford to pay a fine will be immaterial until after you've been convicted of the infringement.
No, not unless she herself is a named party to the suit.
You would be guilty of copyright infringement, a federal crime.
If they are the owners of the materials, they can lose a source of revenue. If they are the unlawful users of the materials, they can be sued for infringement.