It does in fact come from “Cristina”, as in “came from Christ”:
“Kirstine is a girl’s name that originally comes from the saint’s name Saint Christina , which is derived from Christ . Variants of the name include Kirsti , Kirstin , Kirstina . Around 4,500 people bear one of these names according to Statistics Denmark .”
I don’t think so, the original is the also Danish name Kirstine.
https://da.wikipedia.org/wiki/Kirsten
(I trust you have a translator)
It does in fact come from “Cristina”, as in “came from Christ”:
“Kirstine is a girl’s name that originally comes from the saint’s name Saint Christina , which is derived from Christ . Variants of the name include Kirsti , Kirstin , Kirstina . Around 4,500 people bear one of these names according to Statistics Denmark .”
Of course you are right, I somehow got confused by the C instead of K.