My MIL is a EVIL... With only a week warning I now I have to find my fiance car insurance and a cell…

My MIL is a EVIL... With only a week warning I now I have to find my fiance car insurance and a cell phone plan, both used for work and our only income. Are kidding me? You tell us you won't cancel it so he can get his own for over a year since "it's easier on you" but so you can hold it over us and have a reason to ask us for money, and now you drop it with a weeks notice. "You or your dad needs to give me money" to quote her she took my FIL to court to get money even though my fiance was over 18 and was mad about not getting it, but neither my fiance or SIL have seen that money be used for them for child support. She's so pathetic and low, and doesn't care about her kids and acts only to like her grandchild.