Well, I'm back...with bright red face.

[MrBond]

Here's a suggestion:

When she says something, repeat it back to her so that there is no miscommunication. Like this...

After she talks, you say "okay, from what I understand, you're saying that (repeat what she says in your own words), is that correct?"

If that doesn't work, sometimes communicating a different way, such as writing works.