When I do give in & shorten a pair, I leave enough fabric to turn under twice. At the seams, I trim out the seam allowance where it will be turned under on the first turn. I treat the cut edge that will be at the top edge of the hem with a good soaking of FrayChek. I use thread for jeans & hem from the outside.
Goat's milk does contain lactose and it has almost as much as cow's milk. Cheeses made from both cow's milk and goat's milk will have a reduction in the amount of lactose due to the fermentation process. For this reason many people who are lactose intolerant are able to eat cheeses.
In general, goat's milk is considered to be easier to digest than cow's milk. Unfortunately, however, goat's milk contains a similar concentration of lactose as cow's milk. Raw cow's milk contains 4.7% lactose.