No.
When the father has silver and carries gold (like yours), chicks of either gender can be either color.
A Buff Orpington rooster can be the father of sexlinks (cross to a silver hen or a barred hen), but a Buff Orpington hen can never be the mother of such sexlinks.
That sounds like different shades of red/brown/gold/buff to me. It's moderately common for roosters to end up with different shades than hens, but "sexlinked" is not the word that is typically used.
With your cockerel for the father, and a Buff Orpington hen for the mother, I think you have a 50/50 chance of the buff one being female, and a 50/50 chance of the silver one being female.