I never deal with Texas. There are other folks here though that do, so hopefully one will chime in.
I also recommend searching on "Emancipation Texas".....and maybe that will lead you to an answer.
Oh yea, go to the news articles in the other section and find the article that takes you to an attorney in Dallas, he might also be able to answer a generic question on his site.http://chrislawyerblog.com/
That's the link you get to under the "Standard Possession" article.