I don’t think this indicative of chrome being bad on Mac. What did you try to resolve the issue?

Because I could say chrome always works for me (which would be true in my experience), but that doesn’t mean it always does.

Clearing all state (all saved data and cookies), Incognito mode, disabling the few extensions she was running. When it got to the point where the only thing left to do was reinstall Chrome, we installed Firefox instead.