Co-workers

O.k.- I got along terrific with 75 other sisters but now I can't stand one other co-worker! She is sooooo lazy! We are cleaning out the basement of old files and for two days I have been lugging file boxes up the stairs to a dumpster- my co-worker has been no where in sight. BUT- everytime my boss leaves- she comes over and can talk my ear off for two hours. Another thing she does that drives me crazy- she has lived in this country for 10 years and has gone through two marriages in the United States. She just got married again and asked me "Do I have to get a blood test?" "Where do I do it" "How much is it" "Can you set it up for me" - ERRRRR - you darn well know you need a blood test because you had to get them with your two other marriages- you just want me to do the work for you. I'm venting.
My question to you all is - should I confront the co-worker, should I tell my boss or am I being petty and just ignore it?
Help- my frustration is consuming me but I feel like I am being caddy.