My Sister Rachel

I'm Brian 32 divorced 1 child Maggie 5, my ex didn't want her so I got her without any argument and payments to my ex. She left for overseas and haven't heard from her in 2 years. I have my own place just outside a small country town and work from home. Last year my only sibling lost her job and came to stay during the pandemic. Rachel 28 single and with no income needed a place to stay till she found another job. Being the closest relative she chose me, we always got on well growing up. We are both average in build and looks and enjoy similar things. Shortly after her arriving a lock down was imposed and the 3 of us were together all the time. I have animals on my 35 acres and feeding the chickens and playing with the dog and horse riding became a daily event for all of us. At night after Maggie was asleep, Rachel and me watched TV and then went to bed. Then one night nothing worth watching on the TV, we starting playing cards. Nothing special at first then we started betting with crackers. But this became boring and I asked Rachel about playing strip poker. She agreed and after several nights we got more adventurous and thus we slept together for the first time. Soon the card games stopped and Rachel has slept with me every night since. Of course she is now pregnant and the baby is due in July. But as far as anyone outside the the family knows, Rachel is my wife.