Val,
You've undergone the loss of a dear one, a traumatic event in anyone's life, a side effect of which is the change in routine. Add to that the effect of a switch to a new work environment and it'sunderstandablethat life takes on a new hue. It takes time to find that new equilibrium, establish a new routine but it will come.
As someone who worked from home for many years and dressed most days while sat at the PC it was rare for me to fully dress up. Usually it would be a dress or skirt and top, bra, knickers and forms. Very, very occasionally I'd put on makeup but I treated it more as what a GG might do in the same situation. I suspect very few would be dressed in their finest office wear so I didn't feel the need to either.
Give yourself time, you'll find your way.
