bedding

Question
Is it OK to use regular kateen pine I am really scared it isn't and my guinea pig she likes darkness instead of light should I be worried

Answer
Kaytee pine shavings are just fine for bedding.  As to her preference for darkness, does she have a little house or hut in her cage? If so, take it out. She needs to get used to the surroundings and voices in her household.

It's not unusual for a guinea pig to hide. By not giving her a place to hide she will adjust.