I agree that you are not responsible for her mood. No sense in worrying if you have an effect on her moods, you didn't cause it. She was honest with you in telling you that it's not you, which is a positivity of her own level of awareness. Just give her space and carry on your own life detached and as unaffected as you possibly can. That would be a compassionate approach to honoring her.

"Interrogate your hidden assumptions."-Cornel West