Your mother in law should definitely talk to a personal injury lawyer in your area, and hire one who will take the case on contingent fee (lawyer only gets paid from the recovery, if any).  One place to find qualified attorneys is our website, http://attorneypages.comI'm not a Texas lawyer, and the outcome will depend on Texas law and all of the facts.  But in most states, a landowner is responsible for an injury like this.  A broken ankle that has to be fixed with hardware is often a fairly serious injury.You should talk to a different lawyer, yourself, to see what if any responsibility you might have, and you should take your lease along when you go.