Debts and Credit

Can I sue a friend for unpaid loan after four years?
I loaned a friend $15,000 five and a half yrs ago with repayments to commence September of 2006 at a min of $250/month. She paid back a total of $2500 from September of 2006 thru March of 2007 then stopped due to financial problems. Can I sue her even tho the original loan is more than the 4 years statute of limitations when repayment is only 11 months lapsed?
Am I financially responsible for my dad's hospital bills after signing consent?
My Dad is admitted to hospital last week. Since he was in serious condition, they took my signature in the Authorized consenter section. Patient is unable to consent because: Pt. med condition. I therefore consent for the patient. Now my question is, am I financially responsible for his hospital stay if he is unable to pay for the bills? Can they make me liable because I signed that form? I did not sign any other document or gave my information like social security number or etc.
What does it mean when my investment's segregated security is for sale?
I have a promissory note with an investment company in California and I opted for a 6 month payment penalty for early redemption. They replied that the segregated security regarding my investment has been submitted for sale and the proceeds awaited. What does this mean please?
Can my daughter be liable for a mortgage after quick-deeding her house?
My daughter who is 36 years old recently was divorced. She and her husband were joint owners, and joint signers on the mortgage for the house. They owe about $150,000 and the house would be worth twice that if the housing market were not so depressed. As a part of the final settlement, she quick-deeded her house to her ex-husband. After a two-year court fight, she ran out of emotional energy and also gave him primary custody of the children. It was her understanding that they would have the house to grow up in. Now the ex-husband is no longer making the payments on the home. Today he has told her that he plans to declare bankruptcy. It would appear that if he does so, she might still be liable for the mortgage, even though she no longer owns the house or any part thereof. Is that correct? So I am guessing that even if she takes over the payments to protect her credit rating and pays off the house, she would still not own it. It looks she is in a big mess. Is there anything she can do?
How can my mother protect her home investment if she needs nursing care?
My mother is considering buying a home in Spooner, WI. She would be using money from an annuity. She's is in fairly good health and barring anything unexpected, would live there several years. Our question is: If something were to happen and she suddenly had to go to a nursing home or other care facility, how could her home investment be protected? That would really be her only asset. We're not familiar with Wisconsin law regarding this and wouldn't want her to lose that investment. She would need to apply for help with that kind of expense because her SS check of around $1300.00 would not cover the cost.