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.
Lactose-free milk products can also be found at most supermarkets. Also, not all dairy products contain a lot of lactose. You may still be able to eat some hard cheeses (such as cheddar, Swiss, and Parmesan) or cultured milk products (such as yogurt).