It was a very good thing Frigg could not read Sigyn's mind because she was quite content and confident in her knowledge and assumption that her friend was not the sort of girl that would do such things. Things that went against the very idea of how to keep a man interested. Honestly, as much as Frigg loved Sigyn -and she did, the promise of deepest physical intimacy was really the extent of what she saw as what Sigyn could use as a successful lure for marriage. It was not saying that she did not have some truly admirable and lovely qualities, but that required looking deeper and spending a great of time getting to know the lesser Asynia to discover... things that Frigg knew well that most of the Aesir men did not have patience for. Especially if said man that had attracted Sigyn's eye was trying very hard to avoid her.
“Of course,” she answered with a sly smile that held a hint of conspiracy in it. “Who would you have deliver said anonymous message, though? Certainly no one under this roof.” Frigg gave a snort. “Love my ladies as I do... I'm sure you've noticed, my dear, that sometimes nothing can keep their lips from flapping if it suits them.” She shook her head. “Fulla is discreet to an utmost degree, however. If you would like her assistance...”
Sigyn probably wouldn't. But, the offer was there. The closest of Frigg's handmaidens, and some senses a confidant, had always kept everything secret... including some less than desirable behaviors of Frigg's. “You know, it would be easier for me to help conspire in such trickery if I knew who your target was. I can find out things for you... such as if he is going to one of the other eight worlds for some reason... You'd know where to go to intercept. And Heimdall would not have to feel any need to tattle,” at which point she rolled her eyes. That's really what it was. Tattling. Even on her sons and for some reason, on Loki. She didn't care what that repugnant ass did with his time beyond part of her hoping it involved unknowingly catching a disease that would cause necrosis of his genitals. Beyond that, Frigg knew when the ladies left Asgard and mostly didn't care. The concern was only for show unless the disappearance was for longer than she thought appropriate and there was no one accompanying the Asynia to help keep her safe. “Because if he inquired, of course I knew you were going there, I gave it my permission and the reasoning is between myself and you... and I could grump at him for being such a stick in the mud and a nosy Nettie about it.”