I am so sorry you are involved in this situation. You don't mention whether Wife has a health care surrogate and who her surrogate is. Husband is the next of kin and has more rights than her adult children. If Husband wants control of this situation you may want to hire an attorney because I am sure the attorney can find out where the wife is, by requesting the information.
I am sorry for the loss of your parents.
I don't believe anyone can give you the definitive answer to your question without actually probating the estate, or, at a minimum, consulting with you. Certain assets, such as your parents homestead, can pass free and clear of creditors claims, as can most personal motor vehicles. Claims have priorities, some get paid before others, attorneys fees, personal representative fees, costs of probate, funeral expenses, are paid before Medicaid. If...
Parents in Florida have no legal obligation to pay for college for their adult children unless they have agreed to do so. There is an obligation to pay chlid support until a child reaches 18 years of age which can be extended if the child is graduating high school after the 18th birthday and before the 19th birthday.
The most common reason attorneys quit is because they are not being paid. What will happen if no activity takes place in your case is up to the Judge. In Broward County there are two possibilities: (1) it will sit and may eventually be dismissed for lack of prosecution or (2) the judge will set a status conference and require you and your ex to be there to explain what is going on.
There are attorneys who will undertake probate litigation on a contingency basis; however, they want to be assured they receive a high fee. The dollars in dispute need to be large. They also base their decision on the likely merits of the case, how likely they are to win.