The Woman who Works with my Husband..

Sorry the text is small but this woman is in her 50's and all she does is text my husband weird shit. Some of it is work related which obviously must be discussed and doesn't bother me, but when she sends shit like this..? Even my husband asked her if her husband knew, and she said "yes I was just testing you 😉". Like really? I know she's no threat, I've seen her before but how does her husband not find it irritating and my husband won't tell her to stop. I want to say something but I would never ever want to cost him his job. But I mean, do I have a right to be annoyed? This is almost an everyday thing too. Would anyone else be annoyed? She's always sending winks and texts unrelated to work. 
*also, I don't snoop in texts, this is our laptop and I was on my email for work and the iMessages popped up in the corner and I was like tf?* but yeah I am not the snooping type. Just wanted to put that out there!