Simply sending snapchats to other men doesnt automatically mean anything, and i know from my own experience i get a little angry when people automatically assume Im interested in all the guys i talk to, they are just my friends and it can be irritating that people think men and women cant be just friends.

You guys are adults, sit down and have a respectable conversation about it and listen to each other.

I understand the concern, dont immediately jump to conclusions though, especially if you dont know the guys and dont know how they know eachother. Obviously if you guys cant have a respectable conversation about it without fighting that can be a warning sign, and if you later find out she is sending flirtatious snaps and is lying and hiding it, then obviously thats a red flag. But it seems like right now you dont have enough information to jump to that conclusion.