C.P.
Get a comfortable baby carrier(not anything you may purchase at wal-mart or target) and wear her while you do your household tasks. Sit down and cuddle her and sing to her and just love her. She can't say it with words but that is what she is trying to say to you - that she needs you. It probably freaked her out when you left for a whole week.
Crying it out is actually detrimental to a child's health and causes brain damage, I would never suggest that.
Last - remember this is a phase - it will pass. She needs you to help her through it ; )
Soon she will be crawling and getting into everything!
Good luck!
I can recommend some great carriers if you want to email me.