With this costume, she can get away with either.
She just gets to skip right to baking cookies for grandchildren and sewing quilts for the local cats… or you know, any number of other granny activities. Probably don’t get your hopes up for that, but you never know; the elderly can be very unpredictable. No more school and no worries about starting a career for your little girl. Will she yell at the kids running on your lawn or will she be slaving away in the kitchen to ensure all those children are well fed? She could also have an unsettling amount of cats and hoard tons of newspapers… it’s really up to her.