Між двома голосними слід ставити тільки прийменник "В". Повідомив про проблему.
"У" or "В" show she actually went to Atlanta. "До" carries the idea of going up to but not necessarily spending any time in the city. In American English it would be like saying, "I drove across the country from Los Angeles to (до) Atlanta." It is just a slightly different context, and perhaps a native Ukrainian speaker may explain it better.