Jesus addressed this very issue when He said,
"Judge not, and ye shall not be judged: condemn not, and ye shall not be condemned: forgive, and ye shall be forgiven..." (Luke 6:37)
How can you, a mere human, sit in judgement of what is in another's heart...much less what has transpired between a devout person and God? Even I, an "Evo-atheist", refuse to judge, mock or disbelieve a person who claims to be Born-Again. And if such a person also happens to believe that evolution was God's plan and choice, who are you to dishonor their faith or beliefs? I suggest you rethink your position, for you are not God and were not there at the inception of the Universe.