So you just going to leave out Maria’s sister tho :,(
The sister is either:
a) Some kind of pure virgin catalyst for a superweapon who'll get used as a McGuffin midway through the series.
b) Captured and turned into some kind of deadly experimental monster (bonus points if her body is stored under the Church, Lilith-style).
c) Actually murdered accidentally by Dolores in the past, creating potential for Le Drama.
d) Wiped of her memories and left to roam the streets as a vulnerable amnesiac, who'll probably get taken into the Church and recruited as a sister by Sharon. Maria will recognize her, but be saddened when her sister has no idea who she is. At some point, it'll be revealed that this was all a trap the invade the Church by the people who wiped her mind.