Was a Probate ever opened? If the decedent owned property in Texas, opening a Probate will be necessary. Probate is a process that requires disclosure of assets to all beneficiaries. Is you Sister the Executor or Personal Representative of the Will? If so, she has the responsibility for opening a problem and distributing the assets according to the terms of the Will. Do you have an original copy of the Will? It will be needed to open a Probate. I would need to know a lot more details to be able to really provide good counsel. I think you should talk to an estate planning lawyer. You might need to open a Probate if one is needed, if your sister will not act.
If the property is still in your grandmother's estate, someone needs to open probate in Texas to distribute it. If the will says sell, it should be sold in probate. If it is not, once it is in your name you will have to file a partition action. You need to contact an attorney in Texas.
My colleagues are have provided sound advice. If a probate was filed in California, an ancillary probate in Texas will be necessary. You should consult with a Texas attorney. You can try the Avvo Find a Lawyer Tool for a referral.
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