I don’t really have a problem with the freezing of stuff-we have frozen all sorts,some of it comes out ok and some of it doesn’t,so we learn from that.
buying lots of sandwiches etc because they are reduced and then having to eat them before they go bad is a bit pointless though.
I love a yellow label but she is just taking it to extreme,if you need some food go and buy it,it doesn’t always have to be a reduced item ffs( I am saying this about her as it seems she is tight rather than struggling for money,I know some people do need to look for reduced items for financial reasons).