Well congratulations on the newest addition to the household

I have 4 blind cats and they usually do not have any problems with the litter boxes, but I have plenty of litter boxes (10) scattered around the house so there is always one handy "just in case".

Start her off in a small room with a little box and then expand her "area" but keep the box in the same place until she is familar with the location of other boxes in the house.