Consult with a local TX criminal attorney - most give free consultations. It is the state via the prosecutor who brings case & they so not need your consent to proceed even if you want the charges dropped. Depending on the injury to the victim; & past history of violence etc. a good criminal attorney might be able to speak to the prosecutor about alternative dispositions of the charges.
This is not intended to be legal advise or as legal representation. I am a California personal injury attorney . Be aware that every state has its own statute of limitations; and statutes & case laws that govern the handling of these matters.
The State of Texas files the charges and decides when to drop same not the victim or witnesses but often times in this scenario they do not pursue them. Consult an attorney just in case.
Call for a free consultation at 727-937-1400 or visit us on the Web at www.serviceandjustice.com.