When I was growing up, in the 70s, the mother of one of my friend left her husband and took on a relationship with a woman who after some time moved in with her. At the time, it resulted in a lot of tail wagging, people judging and a teacher even called social services to investigate.
She was told she was selfish, that she was giving her daughter a false sense of what families were about, that she would grow up confused with her sexuality etc...
As it happened, whereas there was a bit of nasty spiteful side of her before her parent split, she became a lovely girl afterwards and we grew closer. She finished her studies with no trouble and went on to university. She studies sociology and started dating a guy in her second year.
She went on to have a very good job working for a global company, married a man she met at work in her early 30s and had two children. She is the most 'normal' person you can imagine. She is very close to her mum and SM but isn't in touch with her dad any more.
Seems all normal now, but it certainly wasn't at the time and many people thought she would grow up to become a very disturbed adult. If anything, she grew up confident and resilient, hence doing very well with her life.