How dangerous really is Liberty City?

A friend of mine it's moving to Liberty City, close to the elementary school and she didn't know much about Miami and now her coworkers are scaring her about living there and she's wondering if she made a mistake.

I honestly only heard bad things about Liberty City but she said that the area didn't seem that bad when she went to see the apartment and that there are new buildings popping up.

I read that east of 12th Ave it's when the bad stuff happens. But I honestly have no idea, I haven't been living here for long enough.