1) You can't beat the Medicaid claim by just waiting a bit
2) If you "can't probate the will" that left you the house, then the house isn't yours
3) In some circumstances, you can establish title by living in a place and paying taxes, called adverse possession. That is a risky way to try to establish title, and you would probably have to bring suit after the time period to clarify title.
So, you can't get water, sewer, and there is a medicaid lien on a house left to you in a will that...
Really making some guesses here, but a deed doesn't have to say "$10 and other good and valuable consideration." It can be "granted per terms of ___ Trust" or "gift per Will probated . . ." j
It sounds like the Trust owns 1/2 and your sibling owns half, if so, both the trust and the sibling need to grant you all of their interest, not just 50%. Really, need a title report and the deed to do this. Ask these questions to the lawyer preparing the deed.
If your father died and left all to his wife, then you are not automatically entitled to anything from either estate. You would have to challenge your father's will and you've described no facts to support a challenge.
As to the "stuff" this is a classic case of what I call the "pickup probate." Which means: the first one to the house with a pickup wins. Cruel, but true. Yes, you can sue your grandparents and uncles, but pursuing such a case won't be worth it. If your father died unmarried and you are his only child, then you are the heir. You refer to probate of a will, so the will controls and an executor should be named. I'm assuming the uncle is the executor and he is correct, the bills must be...
$1500 is a fair rate. You might find someone cheaper, or who would take payment in installments, or who would accept credit cards. You don't explain why you need to probate your mother's will, so I don't have the information to tell you if less expensive probate alternatives are available.
Given that you are in the Houston metroplex, there will be many attorneys to choose from. You had to think on the negative side to determine which attorney is best for you. The worst thing that cold happen is that you get prosecuted for elder abuse or, more likely, get sued for breaching your duties on your power of attorney. If you feel you might be prosecuted, you need a criminal defense attorney. If you feel the only realistic situation is that the family might sue you, they will...