@Koah: Oh man, I'm the oldest by far of my siblings and helped raise my two half brothers on my mom's side when they were little. To the point that I was expected, under threat of punishment, to get up in the middle of the night if either cried to soothe/feed/change diapers/etc, and god help me if my stepfather was woken by, you know, his own children. Because he had to work the next day, poor baby, while I was only trying to survive high school under fear of punishment if I didn't bring home good enough grades.
*cough* But I'm not bitter.
Seriously, I adore my brothers but the whole "make the older kids miniature parents" crap upsets me in general, I just don't think it's fair. It's also quite possibly why I decided I didn't want kids of my own while my brothers, as far as I know, plan to.
And yeah, I dunno what exactly was her problem, but she's pretty judgy in general so I guess I shouldn't be too surprised. ¯_(ツ)_/¯