You should have her contact some Defense attorneys in your area as soon as possible to discuss the merits of the case. Some attorney's offer free consultations, and can be found on this website (avvo.com). In a case like this, it will be important for the Attorney to discuss directly to her (as she is the client). Is she currently in custody, or was she released?
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You and your friend are going to need to contact some attorneys in your area, not put out a call for attorneys over the internet. Find some here on Avvo in the personal injury section and call them.
Due to the felony charges, your friend is facing substantial criminal charges. In my estimation, the criminal case is the place she needs to start at. As a former law enforcement officer in the Metro-Atlanta area, I would encourage you to have her (as the client) immediately begin calling criminal defense attorneys in the area. You can find qualified attorneys by searching the internet in your local area and reading reviews or here on www.avvo.com. She needs to be the one to call the attorneys so that she can describe exactly what charges she is facing and the circumstances surrounding the arrest. Getting an attorney involved quickly is ESSENTIAL in this type of case. There may be video footage in various places that could be recorded over in the course of business. For example hotel video, ploice station video, atm video, etc. Also assuming you are correct that a police video of the incident exists, measures can be taken to try to begin the process of obtaining that video. Finally, assuming there are witnesses to the incident that are not necessarily known to your friend, an investigator may need to begin the process of identifying these folks for later use in the criminal and/or civil litigation matters.