How nice that you are learning together!
I don't think there's any 'trick'. If you know how to darn socks, you're probably good enough to fix it in a way that's pretty invisible. I've often just tied them closed with a short length of yarn and tied it, weaving in the ends.
"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