If I need meat and the shot is right, I let it fly. This is only my second year hunting traditional, first year with a longbow, and have yet take take a deer with trad gear. I will take any doe, whether she has a fawn or fawns.
Several years ago hunting out west, on the last day of the bowhunt (compound bow), I had a shot at a muley doe with twins. It was early September and the fawns were tiny. I decided I would rather go home empty-handed. I was sitting on the ground against a boulder, and the doe kept feeding toward me until she was only about 8 yards from me, quartering away. It was tempting. Plus the fawns bleated almost non stop for 15 to 20 minutes. I almost shot the doe to end her misery! They were cute for about 10 minutes, then very annoying. Never regretted coming home empty-handed though. I don't think the little ones would have made it without mom at that point.