Ok I lost Cassidy! I want my cowgirl back! Ive noticed other people have been having this prob. with companions dissapearing, so how do I get her back?

Try the workaround listed here.

http://www.gamesas.com/index.php?/topic/1120449-please-read-before-posting/page__view__findpost__p__16570812

ok here is what probably happened. You ethier.

-Went into Mr. Houses penthouse, wich automaticly sets them to wait

-You set them to wait, but forgot, and have now lost them in the wasteland (Eventually they will randomly apear, ARCADE almost made me have a heart attack)

-Or they got glitched but will return upon entering a new area.

The one right above is the one that ussualy happens to me, not a big deal tho.