Maizie - Looks sweet and I doubt Bree has anything but appreciation for that. Also for a teenager/young adult's ability to have survived the outbreak for this long. Props, Maizie. Bree would be happy to chat her up - past or future.
Bunny & Ruth - Bree's definitely interested in helping Bunny if she ever needs a hand. She's still a ranch kid at heart, so that's niche work for her. She's probably more interested in Ruth as a person though, work issues aside. The cold, harder to read people usually poke her curiosity. So she may drop in now and then just to see what sort of projects and acquisitions Ruth is working on. Apologies to Ruth if she finds that annoying, Bree just likes to figure people out like big jigsaws.
Kevin - They've likely crossed paths. I think she and her brother were on fairly decent terms with the ghouls they occasionally rubbed elbows with down there, but made sure not to get in their way. So I suppose the tone of any interactions would have mostly been set by whether or not Kevin is at all hostile to strangers?