Three sisters aged between se#,ve[!n and 15, who*; live alone as $)the\#ir m^.$other )^vanish@_#es for whole sw^*athes of $=- time, and] whe[n so@+;cial s$ ervices -d-emand a $f$amily mee ting, the \e ,+ldest s]+; is:]=ter, Laura, plans to find a stan_d-in !f:?/or th$.e,ir `mo^ther.