My husband's mother moved in with us temporarily, and we don't know for how long – maybe a year or t…

My husband's mother moved in with us temporarily, and we don't know for how long – maybe a year or two. She's driving me crazy. Nothing is ever right, nothing is ever good enough. If her daughter and I say the same thing, she naturally sides with her daughter. She's always inviting people over. It's vacation time now, and she invited her daughter. (The point is, we're currently living in her house, but that's not the main issue). She sold her apartment where she lived and moved in with us, saying it was her house. My husband is building a house right now, and we're supposed to move out in September because she's taking this house from us. Because of this, my husband and I are constantly fighting, as she wants everything done her way. Even if I go out to the park with the kids and my husband in the evening, she'll start rolling her eyes and say, "The house is a mess, and you're out having fun." The "mess" in her eyes is unwashed windows that I cleaned two weeks ago, unironed curtains, or kids taking off their clothes and leaving them in the hallway. I'm very quiet; I'll answer once, and then I'll stay silent. Then I tell my husband everything. It's simple: I take the kids to daycare/school at 8 AM, come back to lie down, and she starts making noise, watching movies loudly, or talking on the phone so I can't sleep. And if I do lie down, she says, "Wow, you're something else." "There's so much to do at home, and you're resting." I'm so tired... My husband is always at work, and I'm always with her. I don't know how to tell her to back off. Because of her, I've started snapping at the kids and my husband.