Perhaps it doesn't need to be about arguing. Maybe it can just be about learning new things, while playing games at the same time. If you don't understand it, you can always ask.
[and then, because it just occurred to her:]
I may not always know what's going on, but if you have questions about these things, you can always ask me, and I'll do my best to answer.
no subject
[and then, because it just occurred to her:]
I may not always know what's going on, but if you have questions about these things, you can always ask me, and I'll do my best to answer.