Leah and Momma - hang in there. We did not choose to be in this position and as long as we are doing the best we can, then that is an achievement in itself.
You still have a purpose in life; you just need to find it.
Keep working with your pdoc and get that med combo up to an ideal standard to have a quality of life.
Leah - you know you are doing the best you can for your daughter. Love her with her all your soul and might and don't be so hard on yourself. A 7 year old can also not yet understand the gravity and debilitating effects of mental illness.
Hugs to you both