Review the settlement documents you signed when you settled, in particular, the General Release. Most General Releases contain language that you accepting the settlement monies in exchange for all injuries, both known and unknown. You have an uphill battle.
Since she denied posting, perhaps you need to address your interrogatories to the issues of who else has access to her computer, her passwords, her social media sites. When drafting your interrogatories, remain open to the possibility that someone else posted under her name. Good luck.
The lawyer and client Engagement or Retainer Agreement should clearly address this issue. Most attorney fees are taken off the gross amount of the verdict or settlement - due to the fact that retainer agreement provides for this calculation.
Fortunately your friend had insurance. Since no one was hurt, it is a property damage only loss. Th insurance companies will likely engage in an inter-insurance company arbitration process. Your friend will be out his deductible.
John's reply above is correct. In addition, the summary you provide could have been written by a heartless insurance company adjuster. Please re-think how you look at this collision and resulting injuries. You need to humanize and articulate how the injuries have affected you. What were your dreams, goals and purpose in life? - have any of them been altered, terminated or destroyed as a result of this wreck. What are you worried about as you grow older? The uncertainty of the herniated disc...
In addition to Stuart's response, I wonder if his own dog bit him. How can he satisfy his burden of proof and prove her dog bit him? He has substantial comparative fault regardless of which dog bit him due to him creating the dangerous situation.
After you have obtained a couple of names of attorneys (see John's answer above), I recommend you ask the attorneys to provide you a list of actual jury verdicts they have obtained. You want docket numbers to the verdicts so you can independently confirm. There are many, many attorneys who "posture" (I'm being kind) that they are real trial lawyers. Get the facts. Go with a proven attorney who has looked a jury in the eyes, on many occasions, and won. Great question BTW.
The typical turnover time for a non-fatal car crash is 3 business days. However, in car crashes involving fatalities, I have waited for close to a year on a few occasions for the Connecticut or local Police to finish and publish the report.