Haha. you r not alone, dear. Me too. just that your mother in law lives w you, so alittle tricky. Prob just bring your son out every weekends w/o grandma of coz so your mother in law can get the hint that weekends belongs to you.
I always use some tactics (before going over, I told her if she's gonna stay over, then she can pack all her clothes & go live w ahma. dont come home anymore. Haha.) to make sure my gal comes home w me w/o fussing after visiting mother in law during the weekends. Coz when she was younger, she always wanna stay over for the nite.
Now she auto wants to come home when I say lets go. Now I tease her, ask her stay over, she will cry & say dont want. But I created a problem for myself also. If dear husband & me wanna go partor, we have to leave the kids over at mother in law place & dear daughter dont want. So ya. LOL.