Skye 13
Jordan 11
Makayla 3
Riley 3
If the 4 children have different initial letters on purpose:
B/B:
Logan /
ConnorG/G:
Amber /
FayeG/B:
Kiera /
Alex
If she doesn't mind repeated first letters:
B/B:
Kyler /
JesseG/G:
Jolene /
Stella B/G:
Ronan /
Scarlet
What I'd personally name them (that is to say the ones of my favs that match the siblings best):
B/B:
Connor /
AlisterG/G:
Joni /
FayeG/B:
Joni /
Alister