The marker should have gone around the needle. If you don't have an 'official' marker, you can just tie a loop of yarn around the needle where they call for a marker. When it comes to slipping it, you just move it from one needle to the other.
On occasion, a particular stitch needs to be marked, but in this case they want the marker on the needle.
"Trust the pattern!"
Time flies like an arrow, but fruit flies like a banana.
Hop aboard while we follow the cloud-covered van of knitting harmony, man!! Woooo!! --Hedgehog
IngridKH on Ravelry