family spys?

Today we were out shopping for clothes for rocket girl...as we entered the store she paused while passing to say hi to a friend of her Mom's...it was, Hi- how ya doing-you've grown so much-tell your mom I said hi-we went on. Much later (these people were exiting when we entered) I see this same woman pretending to look at a toy display where brother was parked next to-and she is taking pictures on her phone of bouncy boy! NOthing in her cart! How long had she been at this?! Did she video too? I called her out- I said I would appreciate it if you don't take any more pictures-if you know these kids, then you know their privacy needs to be protected. Rocket girl was in a fitting room-I was standing there talking to another set of foster parents who just happened to be there at the same time. The gal said-I didn't know I was taking pictures-other foster mom spoke up by saying-well you were. Then she added -maybe you should have turned off your shutter sound first....I laughed-she walked away.... I immediately txted both RC and kids worker. they didn't have much of a response-other than-you'll have that sometimes. Anybody ever have this? How did you respond? Did you get any backlash from parents later? I mean-I didn't know what kind of friend this lady is to their Mom?! Maybe she was sending mom pics-maybe she was gonna slam her on social media for her kids being removed! IDK Either way-she wasn't being very respectful to the situation.