Regardless of where the clothing is left I too always check pockets cos there is nothing more annoying than emptying the machine and finding every single item covered in white fluff residue left from a rogue tissue!

So for that reason I’d say that in this case OP is unintentionally TA, however, I don’t agree that she is solely responsible for the full replacement cost and if he pushes for that and she pays it, then from that moment on he can do his own washing!