Here's the Texas statute...
https://statutes.capitol.texas.gov/Docs/PE/htm/PE.19.htmLooks like Murder might fit, as it prohibits knowingly causing the death of another. Under Texas law, the definition of "knowingly" is:
"A person acts knowingly, or with knowledge, with respect to the nature of his conduct or to circumstances surrounding his conduct when he is aware of the nature of his conduct or that the circumstances exist. A person acts knowingly, or with knowledge, with respect to a result of his conduct when he is aware that his conduct is reasonably certain to cause the result." Title 2, Section 6.03.
I don't recall any specific details about the shooting, number of shots fired, where the victim was hit, etc., but it really isn't too much of a stretch to see an indictment for this. Leaves room for a plea bargain, if you want to think conspiracy at all...