I have no idea. But as a math teacher, I explain a concept over and over again to my students. I usually literally teach my students the same thing 5 times, because for whatever reason it didn’t sink in the first 4 times.
Very often I teach a concept 3 times in class, then have them practice it, then they go home and totally forget how to do it. Often kids don’t pay attention in class, will goofff off in class, or it enters their short term memory and when they get home they forget it. In each class I got around and check with each student to see if they got the concept down, but I’m lucky I can do that in a small school where I have no more than 13 students per class. Most people have 25-45 students per class and it’s literally impossible to check in with each student.
There are always a number of kids who don’t want to learn and will often derail the class, so classroom management takes center stage over checking in and offering one on one help which her daughter probably needs. In addition public school teachers have so many responsibilities other than teaching, when I taught in the public sector teaching was actually only 15% of my job. I was expected to,
Make sure the kids got fed daily
Keep data on which students showed up, participated, learned, and their mental state.
Provide psychological counseling over trauma in their lives.
Create a safe place for them.
Develop emotional support systems for them.

Communicate extensively with families and admin about the details of my class by posting everything to class websites.
After that was done I was allowed to teach.

Many, most students needs a certain amount of one on one help, like this student, and they don’t give teachers the resources such as time and priorities to provide that, so these students turn to their parents.
I’m really lucky that I am at a small private school where I can provide each student 1-3 minutes of one on help per class, in most schools thats impossible.
In short, most likely her teacher is in fact teaching, but like most kids her daughter probably needs a little bit of one on one help and the school doesn’t have the resources to provide her with that, and that’s not the teachers fault.