Can you help me?

You've heard (read) about the sleep sack I'm making for this (still nameless) baby.  I've gotten to a point where I don't feel comfortable going further for fear that I might have to rip out more than I might already have to .....


So when I first read the pattern, I felt quite confused about what it meant by where to mark for the sleeves.  I finally felt comfortable enough to continue on, and marked at row 13 as stated.  I then saw that the "bodice" was crocheted from the waist up, not the neck down, so I thought maybe that was why I was confused.  But now that I'm working on the sleeves, it seems so wrong!  My sleeves look way too big.  But when I look at the photo posted with the pattern, it does look like it is 13 rows from the waist.  My bodice has 38 total rows as stated in the pattern.  So think you can take a look at my pics and the patterns pics and tell me where I'm going wrong??  Thanks!

(Also, when I work the math, it checks out - 38 rows in the bodice, minus the 13 rows that were not intended to have sleeves, = 25.  As I was crocheting the sleeves, I came up with 50 all the way across - 25 for the front bodice, 25 for back.  So if I'm doing everything like the pattern says, and the math works out, WHY do the sleeves look so big??)
Here is the pattern.
Here is my sleep sack so far:

 Also - I looked at the pattern again and saw that my sleeves, at their widest point, should measure 7.5 in. across, and mine measure 11in!!  So how can my math work out but the inches are so wrong?
WAHHH!!  I need help!!