Last Wednesday my SIL told me she had broken her toe. This morning she arrives at my house (with her kids) and is sporting an ankle boot/brace claiming she has broken her foot. I am now expected to look after her kids and wait on her hand and foot. SIL has form for being a pathological liar. I suspect she's lying as my sister is adamant she saw her at the train station on Friday evening in heels! I'm tempted to call her out but my PIL's get very touchy when SIL is accused/called out. Also, they're only here for a couple of days and I've spent a fortune on food and just want an easy life.AIBU?