Probably because small towns and the like don't have the media output or population densities that cities do. People congregate in cities, always have since we invented them.
Small population sizes can also skew results. The murder rate is usually expressed in murders per 100,000 residents. As of 2022 there were 333 cities in the USA that were 100K or bigger.
Smaller towns usually wrap everything up into the violent crime rate, so murder, rape, robbery, etc. are presented as one number so it's hard to find info on murders specifically. But for really small towns one incident can drastically change the numbers. Take a town with 1000 people. Parent A snaps and kills their 3 kids and parent B. Translated over, that would be a murder rate of 400 per 100,000 people. By comparison, the 100K+ city with the highest murder rate in 2022 was St Louis at 66.07 (or about 1/6th the murder rate of our hypothetical).
So I can see what Nightshade is saying. 2 murders in recent years may or may not be a lot depending on population, but If it was two incidents of someone killing their partner, parent, etc. then i can see why some aren't so worried.
Heck, in 2018 4 cities with a population of over 100K had NO murders: Irvine, CA; Naperville, IL; McAllen, TX; Allen, TX (and yes, I'm as surprised as the rest of you that two of them are Texas cities, and I live here).
Edit: Incidentally, in 2017 Family was responsible for 12.3% of murders, Other Known (paramours, neighbors, friends, co-workers, etc.) were responsible for 28% of murders, and stranger was responsible for 9.3% of murders. 50% were Unknown (by which we mean that they don't know who committed the murder, not that the victim was killed by someone unknown to them).