The best advice I've seen on hear is to take your time. I started by getting her to go out in a very tight halter neck dress without her knickers, just dress holdups and heels, then giving her the opportunity to flirt and enjoy herself, as she was a very outgoing person that bit was easy, then came showing a little bit more , encouraging her to go out with her mates, I then gave her the freedom to do whatever she wanted, just slipping into the conversation at odd times never pushing just a quick mention then leave it for her to digest for a while, I must mention she is very strong willed and once her mind is set that's it no going back, all this had taken a good 10 years and she was now admitting to flirting with the delivery men that called, but saying it would go no further than that as she was not interested in going out with them , I still continued to encourage her to go but very gently, by the time she was about 33/34 years old the kids were off her hands more and she took a job part time in a local factory, she had been there a while when she told me she had been asked out by a co-worker when I asked more about it she said she had turned him down , now was the time to push a bit more I told her I would love to see her go out and enjoy herself and had no objections at all , she told me a week later she had agreed to meet him for a drink I just said she was free to do whatever she wanted, she came home in the early hours and confessed she had fucked him , a kiss and a cuddle as I told her how much I loved her and enjoyed seeing her free a able to do anything she wanted.
She then told me how much she had enjoyed it and was going again next week, that was it she had got the bug and has had other lovers ever since, it had taken 16 years from the time we were married, we are both 74 years old now so slow and careful is the way don't worry how long it takes you will get there in the end.