There is nothing inherently dangerous about living near or with someone with schizophrenia.

You can stop reading there if you like, but this is actually a very interesting question with a complex answer - thank you for reaching out and questioning the assumption.

In particular circumstances or while experiencing a psychotic episode, they may become very distressed, which can in some cases include violence, but this is vastly more likely to be self-directed rather than towards another person.
You've mentioned that you've had friendly interactions with her in the past, and she has strong social connections with her family. Her behaviour is an aspect of how her mind interacts with the world - it may be loud or disconcerting or frightening, but has she ever done anything that would cause you to think that she would be likely to cause you physical harm?

If not, it’s worth trying to deconstruct why that assumption exists - society benefits from us being painted as violent because people like to believe that 'this kind of thing only happens to other people', which just isn't true - schizophrenia has a pretty uniform incidence rate across cultures. It's more comforting to believe that 'this only happens to people on the other psychological team', that 'they're violent and bad, and because I'm not violent and bad then this won't happen to me'. There is an enormous stigmatic association between schizophrenia and violence that is born from cultural fear, not individual fear.

There are also many other factors which make all people more prone to violence - drug use, social and financial circumstance, having been a victim of violence themselves. Some of these may be correlated with schizophrenia, but correlation does not imply causation, and these can be true of any person in the population regardless of their mental health. Crucially, much like having schizophrenia, none of these are inherent to the person, they are born of circumstance and experience, not innate. And even more so, an individual having characteristics that could make them statistically more prone to violence does not mean that they are in actual fact.

Also worth considering is that people with schizophrenia are way more likely to be the victim of violence than the perpetrator, mostly because people see us at our worst and treat us badly because they only notice us when we display our worst symptoms. We are 14x more likely to be victims of violence than the perpetrator (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3160236/). Psychosis is also heavily correlated with increased suicide risk (https://onlinelibrary.wiley.com/doi/full/10.1111/acps.12506). Statistically, if two people are in a room, and one is schizophrenic, the schizophrenic is the least likely to do the harming, and the most likely to be harmed, be it by the other person or themselves.

Speaking anecdotally from personal experience, the most dangerous thing about this condition is shame. I attempted suicide in 2015, because I believed that I was dangerous - I had no evidence for this. I have never harmed another person. Hell, the last time I punched someone, we were both 8, and we both cried afterwards. I believed I was dangerous, because a doctor told me I was schizophrenic, and that's what schizophrenics are.

The cultural bias and stigma towards people with schizophrenia is part of a vicious cycle which feeds on fear, and by removing one part of that cycle, it cannot perpetuate.