Drama

So my husband ex has no respect for my husband. She and him divorce but she tells the kids its ok to call him by his name and she has them thinking we have to spend tons of money or always buy gifts to make them happy. She makes it like we split the kids up and thats not true i treat those two and my two all the same i buy for one i buy for all i feed and bathe them. They use to call me mom she makes them call me by my name. I was a stay at home mom but now that our 8 month old is fine wit my sister watching him i decided to go back to work. The kids were suppose to be with us for the summer and she wanted them home after a week. Its so crazy she doesnt have any respect whtever we do she just dont give my husband any credit we get the kids whatever they need and he also pays child support but she wants them to call us and see us when she needs breaks. She doesnt send us picks so i would see them on fb whenever she post them well out of the blue she blocks me then adds me but i cant see anything smh and im like well what have i done. She has caused lots of issues but i looked past it i be respectful for the kids but she still has to start drama or do stuff like that. Its just hurts me that the kids have a mom like that. We have ten thousand dollars in a trust fund for them and just to get under our skin she takes money from it . She calls my husband a deadbeat and he loves his kids we do everything right by them but because we both work and we can do family stuff only on weekends now we are the bad guys. She only let them come visit when she wants a break. Ugh