So she brings your son home? Hmmm. Well if you can pick him up everytime, say what you want but if you cant-maybe it was just a bad day. Her husband probably wont let her have a little dog & thats why she has the big one that she neglects because she doesnt want. I would let it go but maybe put your dogs in another room when the lady comes in, if she is coming in she must be wanting to be friends. Maybe she wants you to offer her a drink & conversation & its making her alittle angry that she is making extra effort to bring your son home & walk in for you just to say thanks & bye. Sometimes when people do mean things to us its because we've hurt them w/o knowing it . It sounds like yes she is jealous but maybe she also just wants to be your friend