Then she needs to take steps hereself to convert. How can one have Jews without a Jewish mother?
She obviously considers herself a Jewish mother even though the Orthodox rabbis disagree. She’s been observing Jewish customs to a greater or lesser degree since at least 2006.
At some point she is going to want to do something that is going to require her to convert like becoming a citizen or Israel or wanting to be recognized as a kosher-certified Jew in the Orthodox community. She may then decide to convert.