So, /b/ time for some relationship advice

I'm with this girl officially for going on a month now, and she shows me her Instagram account, on that Instagram she has pictures of herself almost naked and direct view of tits in a see through white tee, so I confront her about it and she says that she can post what she wants, she is old enough and all this other bull, but in the end I told her those pics shouldn't be on Instagram and gave her an ultimatum, keep the nudes up or take them down for me to which she replied that she wasn't taking them down, so I broke it off.

Did I do the right thing /b/?