K.L.
J.,
Sometimes punishing and taking away things has the reverse effect of what it is supposed to have and in your case, I think that is exactly what is going on. You can take whatever you want away but when they go to mom's they will be allowed to do that and other things. Try a reward system instead for good behavior. You need to post rules (no more than 10 but I would start with probably 2 or 3) that you can't live without being in place. When they follow those rules for the day they can put a sticker next to their name on a chart. Have rewards for ever 3-5 stickers they attain with the rewards getting bigger as they earn their stickers. When they have mastered those 2 or 3 rules introduce some more. Or you can do the rule thing with marbles. Get a jar and everytime they follow a direction or behave appropriately a marble goes in the jar. When they are caught being disrespectful one comes out. On the jar put 3 or 4 lines and on the lines put 3 or 4 different activities. As the jar fills up to the lines, the girls receive whatever activity in written on the line. Hope that helps.
K.