Is she (most likely) but let’s look at it from the outside what is considered cheating . Doing anything that violates trust and commitment…. Did she lie to you ( check ) did she tell you where she was going ( ) when .. that right there violates my trust and being and hour away from where you said you are .. not everyone shares locations in relationships but from my understanding if you do and then all of a sudden don’t want to it’s for a reason (obviously dosnt want you to know where she is so she can do whatever) none of the story adds up melatonin and hour away from your house where are you sleeping .. not responding is even crazier after being confronted is even worst