boob shamed

so I just had my fourth baby and I've been posting pictures like mad, now I rarely post pictures of feedings but I decided to post one anyways of my son In a boob coma ,no nipple showing at all this is the text I wake up to from my very own sister she's 7 weeks with her first. " i know this sounds rude but i really dont wanna see ur boob hanging out while ur breastfeeding on instagram first thing in the morning and yes i know its a natural thing but you dont need to show it to the whole entire world there is something called modesty " I love her I really do but she has no idea so I'm just sitting here like damn I really hope I didn't sound that ignorant and judgy with my first baby lol yes I will include the picture in question which is only 1 of 2 total I've ever posted lol does anyone eles have a good story and thier reaction to it