Your daughter just got her first period.
Do not tell her she is a woman now.
Tell her what estrogen does.
Tell her what progesterone does.
Tell her her cycle has four phases and each one will feel different.
Give her information. Not a new identity.
Getting yo shit together requires a deep level of honesty with yourself, you gotta be able to look at yourself in the mirror & be willing to accept flaws & behavior that's not allowing you to grow , self evaluation is difficult but it's extremely necessary.