Hypo: I am mad at my sister. I tell her and law enforcement that her husband molested my 12 year old. My sister shoots her husband. During the forensic interview and before the SANE exam, my 12 year old insists that nothing happened. I finally admit that I made it up because I was mad. Surely I committed an offense worse than misdemeanor false report??????

Possible state jail felony under Family Code 261.107?

Unless your intent was to get your brother-in-law killed, then I don't think you can (or should) be held responsible for your sister committing murder. False report is really the only crime committed. The issue is really whether or not false report should be something more serious than a misdemeanor.