The new $8,550 cap that was implemented in 2013 was to remain in effect for six years, which means that, for high-income obligors, Texas’ cap on net resources for determining child support in 2016 is $8,550 (and will remain so until 2019). To reiterate, that is not the maximum monthly payment amount, merely the maximum amount from which percentages may be determined, based on number of children, for high earners.
Here is how maximum monthly child support payments in Texas in 2016 would break down after the 2013 increase for high earners, based on how many children there are in your family:
1 child (20%) = $1,710 per month
2 children (25%) = $2,137.50 per month
3 children (30%) = $2,565 per month
4 children (35%) = $2,992.50 per month
5 children (40%) = $3,420 per month
6 or more children (at least 40%) = at least $3,420 per month

She'd be getting $2k/month if this happened in Houston! (Which is absurd in the other direction)