I am a new mum and my sister has a 2 year old. If I hear any more comments along the lines of 'your making a rod for your own back' 'it's because your spoiling her' 'she wouldn't be doing that if you'd started leaving her to cry from the first week' I'm going to explode. I'm sick of biting my tongue and am very tempted to just tell her to jeff off. AIBU?