A motion for rehearing may be amended anytime before the period allowed for filing the motion expires, and with leave of the court, anytime before the Court decides the motion.
Tex. R. App. P. 79.3
A motion for rehearing may be amended anytime before the period allowed for filing the motion expires, and with leave of the court, anytime before the Court decides the motion.
Tex. R. App. P. 79.3