It is an issue, but can be overcome. It is a problem.

You must follow the terms of the will. If it requires a transfer to all three you must do it. If sale is not allowed, you cannot do it. Then,...

You should also have a will. The only issue is if you are presently married. That will cause problems.

Depends how title was held. If as tenants with right of survivorship, you do not. Your sister gets it.

It is too late unless there is a good reason for your late discovery of the issues.

It is a bankruptcy trustee issue. There are ways of structuring this type of situation so you can keep the money. An attorney is advised. If you...

It is definitely an issue that the trustee will go after.

It is typical, but if you think there are issues, you can petition for an interim accounting. It is a filing with the Surrogate's Court.

She can legally adopt him. Under the circumstances, this should be easy to do.

Depending on the timing of the improvements and the addition to the value, yes you have a claim. If you lived there but did not pay rent, consider...