My girlfriend (16F) got into an argument with her mother because her mother said me (17M) and her are constantly talking and thats not healthy?

Basically my girlfriend was sleeping on call with me and suddently she hangs up. 20 minutes later i get an audio from her said that she had an argument with her mother because her mother says updating about where she is, where she got and what shes doing is not healthy. I should also mention that she said we should have both an individual life besides the relationship. The thing is we do have an individual life, and even though we are constantly texting about where we are, what we are doing and those type of things, we also do invidivual things but together, for example she paints while on call with me but im doing some other thing that has nothing related with that, some times we are not even talking.
I'm not saying her mother is crazy or none of that, i completely understand because im her daughter's first boyfriend and i do understand the relationship she has with my GF's father might be not the same as mine with their daughter, but what should be done? My reality is that i grew up with parents who used to like a lot when i texted them when i got out of bus, when i got home and telling them where i am and all of that and i'm sure i got used to that and thats where i get sort of my reassurance from.
How should i react? What should WE do? Is this a case where no one should get in the middle of us and thats how we work? I need another point of view.