Police charged a Gainesville woman with neglect yesterday after she allegedly left her toddler by the side of the road while she went to her mother's house, several hundred feet away.  According to police, witnesses said the crying child was about to walk into the crosswalk when a driver stopped and picked him up.  The driver told police that several minutes passed before he saw the child's mother, 22-year old Katrice Tianna Garvin.  Garvin told police she and her son had been walking from her apartment complex to her mother's house when the boy became tired and sat down by the side of the road. She said she did not want to carry her son the rest of the way because she was also tired.