Depression Support Group
Depression is a real and debilitating condition that is often misunderstood by family and friends. Its meaning can range from a prolonged period of sadness to an actual mental illness with specific symptoms. Find and share experiences with others who are going through the same struggles.

If there haven't been changes for a long period of time and are living with her, start considering alternative housing options like independent living facilities or even staying at a trusted friend's place. If you aren't living with her, avoid her as much as you want to. You don't need that energy.
Second, you have a right to say you don't want to be medicated. There are circumstances in which a court order can be issued if you are a danger to yourself and others thus having to take meds in a controlled environment. Although I haven't be sedated like that I do know what it looks like and I can understand your perspective. Other options include looking for another medication that isn't a sedative and/or types of therapies to combine and expand your coping skills.