That is and should always be a major concern for anyone who is relocating to an unfamiliar area. But every buyer/renter has a different interpretation of Safe or Unsafe depending upon their personal opinion. The Brandon Realtor who you are working with should be able to send you the links for Crime stats specific to the Russellwood area so you can review them and see your comfort level for the area. Brandon is a very large area and all areas are different. My only advice to you is, if you haven't already done so, make sure you choose an agent who specializes in the Brandon area and can be an asset/resource for you.
Best of luck to you.