By all means, the book should be "vetted" by an attorney experienced in publishing law and defamation, not only for protection from liability for defamation, but to make it publishable and marketable down the road. A publisher that might otherwise be interested in picking up the book if sales go well, will not be looking to pay an advance to take on a lawsuit.
As Mr. Callahan notes, the cost will depend on the other state's procedures. A contested Guardianship is very likely to be costly. Beyond the issue of cost, look into the other state's requirements for a being appointed as Guardian. Will you have the time and resources (not just financial) to take on the obligations, possible training, and ongoing reporting requirements?
This will be determined by state law. Assets that would generally pass to a surviving spouse under a Will, would pass by the laws of intestate succession in the absence of a Will. However, as noted in the other replies to your question, assets which are governed by a beneficiary designation (such as most life insurance and retirement assets) or which may be held jointly or be subject to a "payable on death" provision, would ordinarily pass to the designated beneficiary or joint owner. State...
In addition to helpful the points made in the other answers here, be especially careful since you have a power of attorney. Depending on local law, this may put you in the position of having a confidential relationship with your uncle. Also, any transfers of property by an agent under a power of attorney to him/herself could come under additional scrutiny. In NY, for example, such a gift by an agent may not even be valid unless a special gifts rider is also properly executed.
Neutrality is a key feature that a mediator is expected to bring to the table in most approaches to mediation. Discuss this with your attorney, and if you don't have one, consider retaining a family lawyer who is familiar with the court and mediation program you are dealing with.
Mediation is generally much less expensive, more empowering, and more private that litigation. Mediators may be, but are not necessarily, also attorneys. Some attorneys also work with their clients and the opposing side to reach solutions without going to court, and practice what is called collaborative law. The links attached to this answer will have resources for you to explore your options. When a parenting plan will be involved in the mediation, the court will most likely need to review the...
When a mediation agreement involves a parenting plan, because it addresses the best interests of the children, the court will need to review it. Check the status of your parenting plan, mediation agreement, and any court order with a family law attorney.
I agree with Mr. Richardson. It is very important that you speak with an attorney in your local jurisdiction right away to find out how much time you have left to bring legal action. The ability to go to court as an alternative to a mediated agreement can strongly influence how mediation works. Additionally, an attorney is often able to represent a party to a mediation. Try to find an attorney who has experience representing clients in mediation.