your family is not an amoeba.....it is composed of separate individuals. and each individual has a right to feel, think and act as THEY choose. you do not have to tow the party line. you don't have to drink the juice, or buy the schtick.
your person is who she is. sober, not sober, pretending to be sober.
let's try this on: Big Whoop. So What?
she can pretend to be Santa Clause, or claim to the be the Easter Bunny. she just may not know any better. is it really for you to say?
get back in your own hula hoop. just do you, and let others do whatever it is they do!!!