If she only goes to the memorial once a year, she doesn't sound like she is that deep into that religion as you might think.
There is a lot people who sit on the side lines of this faith /religion because there is a presnted proposal that Armageddon is coming soon and that the Jesus god is going
to judge who is going to be saved and who isn't. This proclamation sits into people's minds, so for some they take the assumption that going to Church once a
year for as celebration of sorts is enough to put them in the good book so to speak.
Proceed with caution nevertheless.