Willow and Ivy headstone

Hi my name is Bryan Duncan and as a lot of ppl are aware I lost my 2 wee sisters willow and ivy we have a stone at the cemetery for willow but wanted to add Ivy on to it but the stone isn’t big enough so have to replace the stone with the same stone but bigger to add Ivy which is costing £4000 we have had so much help with funeral cost etc but this is our last thing can everyone plz help and give my wee sister the beautiful stone that both beautiful girls deserve much appreciated from all of us