HOGUE
They have a universal wrap around grip (really nice). $10.00, I'm guessin it'll be too long for the sub compact, so you can get an xacto knife (hobby knife) and trim it to your preffered size.

They make a small one for Glock 26 sizes - either Hogue or Pachmeyer does. So, there will be something that will fit without cutting it

I have medium small hands and I tried both, but I found the grip was too beefy for me even with the smallest backstrap. I bought some skateboard tape from Acadamy, cut strips and glued em on with a little goop. I like to try to get to where the grip is centered between my thumb and index finger and I just couldn't do it comfortably with the slip on grips.