You don't sound like a good employee. You were there for ten years and never tried to make things better or had ideas or good relationships with superiors? And then once this new boss came, you went to her with all of your problems looking for spoon-fed answers and not doing any of the critical thinking yourself. You then get the one person who helped you fired claiming you didn't know that's how things worked, when you are the one that has worked there 10+ years. And now you are surprised at being asked to come up with some solutions and not just "venting" aka complaining all the time. It sounds like you have been at this company waaaay too long to still not have any idea what you're doing or how to do it.