Thanks for taking the time to help me with this Ingrid, but I'm still confused.
When I was saying about the purls after doing the cable in row 3, I meant in chart C for rows 1 & 3 those are purls rows for when I did the body of the sweater, but doing the sleeve it doesn't call for me to do chart C. So when I tried it 4 times last night and ripped it out 4 times last night

I looked on the RS and didn't notice the cabled part that I had knit.
I'm sure I'm overthinking this as I've done several times with this square. I just wish she had written it out better than just the few lines of "in other words" that she did write out. I can read charts just fine but I think it's the way she words things that gets my brain tied in knots. So I put it down for a while and knit the backround square and keep going back and the other 2 times I had to do that it worked and I re-read it right the 3rd time, but this time it's not helping. I know I'm reading it correctly it's just not clicking for me.
BTW, since I have you (bless you), it calls to do the inc 4 times for a total of 16 sts and to do it on the RS in the 4th row. But the 4th row is the WS, so do I do the inc at the start of row 1?
If any of this made sense (I know it didn't really) I thank you for your help.