Andrine Christiane Johnsdatter, my grandmother

I am seeking information on a period of about 21 years in my grandmother's life when she seems to disappear from the record, in Norway. Submitted this same query to NHF about 2 yrs ago; no results. I will summarize all I know of her life in Norway - may take a couple of posts to do this - and hope our veteran experts can help me. 12 Dec 1871 - she was born at Aase, Hordaland - east of Alversund. Parents John Christiansen, Synneve Larsdatter. They were lodgers - innerst - on the farm of Synneve's parents. Andrine was baptised at Alversund church. 1874 - her parents buy the family farm at Nedre Myksvoll (various spellings) from John Christiansen's parents. Location is northeast of Alversund, in Lygre parish, Lindaas commune. 3 Oct 1886 - Andrine is confirmed at Lygre church. She is eldest of 5 sisters, one brother. This is the last record I find for her until 1907...21 years. I will continue in a new post.