I did not cause this wreck. I have to get another car. How can I keep from loosing money?

Whose insurance do I go through, and how do I get more money for my car? I was stopped at a red light for 30 seconds or more. I was rear ended by a rented Dodge Ram and pushed into a 4Runner. Her insurance says 60 days or more. My insurance offered $10,312.00 for my 2016 Toyota Camry, then deducted a condition deductible and my $1,000.00 deductible (I might get the deductible back if her company pays my company). This leaves $8,586.94. I owe $7,031.99 which leaves $1,554.95. This does not include anything for medical or rental car. Blue Book puts my car at: Dealer 13,053-16,266 and Private at 12,211-13,810. I have not signed or accepted anything at this point.