She would have to reapply for membership of everything, and in some cases she would face being rebuffed.
While that from which she had seceded would sail serenely on as if nothing had happened.
2021 candidate for Durham County Council and for Lanchester Parish Council. Funds permitting, 2022 parliamentary candidate for North West Durham, or for its successor seat containing Lanchester. No party affiliation; I do not even use the word "Independent". Freelance journalist, available for work. Contact firstname.lastname@example.org. Accepts PayPal.