Hello :)
The Gods also lead us to information that we need, not just telling us directly. At the time that Lady Pythia wrote Yaum for Ajna and Aum for Anahata, that was based on what she had available to her.
Lady Pythia has read thousands of books, I am certain she had more information than I do in many regards, but she likewise did not have access to all the information I have, because she was not a certified yoga teacher, and there is certain information that is only available to those who have taken specific courses. Even with the internet, not everything is available to everyone.
all the information was passed to her directly by the Gods
Not exactly, much of it was from books, she herself wrote that a lot of the website needed updating because there was outdated information.
There is much that is told to us directly by the Gods; and there is much that they lead us to in books or online. The Gods want us to find information on our own, that is how we grow and shape our world. They don't want us to just sit here being a passive conduit all the time for everything, we need to put in the work to learn, this is how our minds grow.
Furthermore, she did not have all day long to research and communicate with the Gods. She had a husband, children, grandchildren, and pets to care for, cooking and cleaning to do, and she worked a full time job. This is why we all work as a team, because more of us are able to expand in our areas than what one person can. I am simply expanding on her great work, which in her own words was not finalized.
On a final note, when I was new, it was Manipura chakra pointing up, not down. Then Lady Pythia revealed to us that it should point down. This information was not given previously because pointing it down was very advanced at the time and we didn't have many members who had any advancement, so certain knowledge had to wait until we have more advanced members. I believe this may have been the same situation for the mantras for Ajna and Anahata. Kshaum is very advanced, and back then hardly anyone had clean chakras, so it may have been too dangerous for the general public to do.