do you feel judged if your in sweats, no makeup, no bra etc if someone walks in the house?

Moriah
I just moved to a "aunts" house.
 Her step daughter (which is like the same age about me) walked into the house, we hadn't seen each other since we were kids or maybe teens, we don't talk often so I just gave her a big smile she didn't even achknowledge me.. I'm not the type to get "butt hurt". But I've been kinda depressed for a year, real low in life, just gone through a breakup. Like I'm not going to look all jazzed up at home..
How would you act towards her in the future now?
I normally just pretend like things like that never happen and just wait to speak to them again or if they would me.
EDIT: Oh my god you guys. Of course I didn't expect some reunion when I stated we were never good friends in the fucking first place or hadn't talked much since even seeing from years ago. But it's just MANNERS to achknowledge someone back.