Cathy cheating on wonders

i just discovered. i played on immortal pangea quick settings. cathy was able to build pyramids on turn 23. and i built great library on turn 28. i saved and builds stonehenge and cathy and i were friends at turn 31 and i can see the stonehenge under construction in moscow and she beats me at turn 33. i rolled back and choose temple of artemis, same thing happened. we were friends, i can see what she is building and i was beaten again by artemis. i rerolled 6 times same thing. it does not matter either the stonhenge or temple of artemis. in the end i choose granary, she did not beat me.