"My anxiety/mania is out of control right now, and my doc wants me to take 25mg. of Seraquel."
I know it is probably kind of scary to think about adding ANOTHER med and maybe having some side effects....but if your anxiety etc is "out of control", your quality of life is suffering and so is your family's.

If you can get the anxiety & mania managed, then you can focus attention on other issues which are important to you--whether that is getting back to a weight you are comfortable with, changing eating habits in your house to help with this etc.
BTW, I don't know what your body type is like, but 130 was an ideal weight for me....at 5'4". Since you have been hospitalized in the past for anorexia, please be careful that the aim for a certain dream weight is truly healthy for you. You may want to check that out with your doctor or another professional first. If you drop your weight too low, there may be other negative side effects as your metabolism changes.
Sharon