Not unless the document that established the ownership interests provides that. It would be relatively rare to have that kind of an agreement, but probably not unheard of. I would want to see it in black and white before giving her anything. It would probably be beneficial for you to meet with a probate attorney and determine exactly what you have, before speaking with her about how you are going to proceed.
*** LEGAL DISCLAIMER I am licensed to practice law in the State of Michigan and have offices in Wayne and Ingham Counties. My practice is focused in the areas of estate planning and probate administration. I am ethically required to state that the above answer does not create an attorney/client relationship. These responses should be considered general legal education and are intended to provide general information about the question asked. Frequently, the question does not include important facts that, if known, could significantly change the answer. Information provided on this site should not be used as a substitute for competent legal advice from a licensed attorney that practices in your state. The law changes frequently and varies from state to state. If I refer to your state's laws, you should not rely on what I say; I just did a quick Internet search and found something that looked relevant that I hoped you would find helpful. You should verify and confirm any information provided with an attorney licensed in your state.
Attorney Frederick i right about the law in general. Since the property is iin Florida, the rights will be determined by Florida law. You need a Florida attorney.
I suggest you find a real estate attorney in the county where the property is located. Some wil give you a free initial consultation. Either scan-in the original deed, will and probate documents to the computer so that they are ready to be emailed or have a fax available to send the documents (such as at an office store). Do not try to explain it over the phone. It is better for you to be well organized, make a phone appointment with the attorney and email/fax documents before the appointment so that the attorney has an opportunity to review them. He/she can probably give you a quick answer with the documents in hand. Good luck to you.
If this answer is "helpful" to you, please indicate so. If it is the "best answer" you receive, please indicate that also. Disclaimer: This answer sets up no attorney/client relationship. The information provided here is done so as general information only and is not intended as legal advice.