Family Müller in Rosocha (Rotzog)

Hello, i hope someone could help me with information of this family:

I have a girl Margrethe Louise Emilie Müller, born in Rosocha/Rotzog in Pommern 7 oktober 1878. Her parents are schoolteacher Emil Müller and Bertha Vilkens. Margrethe Louise Emilie Müller married 30 maj 1905 in Gram, Denmark Lorentz Peter Frandsen.

Any information about Margrethes parents, census records or other information about their age, where they were born, when and were they died!

Thank you

Bent Christensen, Denmark :)