Detailed Instructions: Given a travel related situation, and given a specific question about the situation, summarize the question into a title
Problem:Me and My Mother currently reside in the USA, California

My Mom came to the USA with B1/B2 visa and she is from Iran and it is not included in the countries of VWP and I am permanent resident of California, we are flying to Texas and I have seen this:

Required for transit flights through United States Electronic travel
authorization In order to comply with instructions for the US
Government, we inform you that all passengers regardless of
nationality who are travelling to or transiting through the United
States of America will need to obtain an electronic preauthorization
from the 12 January 2009 onwards. * Bellow you can find the access
link to complete the corresponding application.
https://esta.cbp.dhs.gov

I got the tickets online. I don't know what ESTA is. Do we need to do it?
It is talking about people under the Visa Waiver Program: I do not even know if we are under this visa or not?

Solution:
Flying from California to Texas: do I need ESTA?