You will need to probate her estate and have letters of administration appointed so that the house can be sold. Without letters of administration, you are not authorized legally to deal with the estate's property. You should speak with a local probate attorney who can help you get started.
Based just on your description, yes. You should speak with a personal injury lawyer near you to go over the details and get accurate advice about your situation. Many personal injury lawyers will give you a free initial consultation.
The short answer is yes. You are responsible for full performance of the lease, which is a contract, and that includes paying the full rent. The solution is to try and work it out with the landlord to get a release from the lease, or to try - if the lease permits - to sublet the apartment; keep in mind, however, that if you sublet you will still remain liable on the lease until the lease ends or the landlord gives you a written release.
Mr. Davidoff is correct: whether your legal expenses are deductible depends on what you incurred those expenses for. It is impossible to give a comprehensive list of examples. I would strongly urge you to consult with a good accountant or CPA in your area to discuss your situation in more detail; that is really the only way to get an answer you can rely on.
That wouldn't be unlawful imprisonment under sections 135.05 or 135.10 of the NY Penal Law because the elderly person hasn't had her liberty substantially interfered with by moving her from one place to another or by confining her in the apartment (or in some other place to which she's been moved).
I could very well be some sort of elder abuse, however. If this is a real situation, you should consult, at least briefly, with a good elder law attorney in your area.
Everything depends on what's in the lease; however, as a general matter you do, in fact, have a lease with the new owners. An unexpired lease goes with the property and binds the new owners just as it did the old owner. It also continues to bind you. That means that you are required to continue to abide by the terms of the lease even though the property was sold.
In terms of the narrow question of your security deposit, if you in fact didn't violate the lease then they're in the wrong;...
Generally speaking, if you form a corporation in one state but engage in business through that corporation in another state, then you have doubled up on your initial filing fees and most likely on your annual registered agent fees because, generally speaking, you would be required to maintain a registered agent in the state of formation and in the state of operation. Also, in addition to the initial filing fees to form the corporation, you would have to pay additional filing fees to the other...