Thanks for your question. My experience is that if I determine that client has mental capacity to make a decision-I will hold their hand and help them sign document. The document to be signed in your question would be a power of attorney to avoid the high cost of guardianship.
Thanks for your question. Since I am an attorney, I cannot ethically give you specific legal advice on your situation, since you are not my client, but I can only provide you with general information that you may find helpful.
Generally, a person needs to have the same mental capacity to execute a Will. The fact that the person is physically disabled (and can not make a mark without assistance) is irrelevant to the person having capacity. In such situations, an attorney is likely to ask for a statement from the attending physician that the person is mental competent, and will likely assist the person in signing or marking the document.
The best advice that I can recommend to you is to contact a local estate planning attorney that can assist you and your family.
Best of luck,
Shawn C. Newman, Esq.
Attorney At Law
1881 NE 26th Street, Suite 212E
Wilton Manors, FL 33305