Baby Sister

I'm John 38 divorced 2 children who are with their mother, I lived alone till my sister Caroline 24 the youngest of 5 came to stay. I'm the oldest and live on a forty-acre block in the foothills near a national park, I have a dog, 5 horses, and 7 chickens and work for the local power company. My house is a ranch-style 3 bedroom 1 bath, I got it 5 years ago in an estate auction. I'm not farming the land, just have the horses for riding, I like riding horses always have. Chickens for eggs, my dog called Dog is for companionship he's a crossbreed. Caroline just turns up no prior warning no nothing, she had broken up with her boyfriend and just packed up and came to stay with me. I hadn't had much to do with her except at seeing her at family events, as I had left home at 18 and she was almost 4 at the time. I reckoned she just needed a change of place for a while and welcomed her as usual. I didn't ask how long she was staying or such like, I gave her space to think though want she needed too. After 2 weeks on a wet Thursday night, I went to bed and was going to do some maintenance to my barn on my block leisure period. Five days off in a row, I got these once a month and looked forward to them. I was in bed for about fifteen minutes and there was a flash of lightning and quickly followed aloud thunderclap. My dog came racing in a straight under my bed and Caroline wasn't far behind him, she jumps into bed with me and hid under the covers. I sleep naked and was a bit shocked by her just jumping into my bed without asking first. She was in her PJ's and she cuddled into me, it took her several minutes to realize I was naked. But it still didn't bother her any, she stayed the night with me and when I awoke in the morning she was still asleep and the dog was asleep between our legs on top of the bedclothes. I got up and showered, dressed and started making breakfast. Caroline and the dog stayed in the bedroom after breakfast was ready I went and woke Caroline and we had breakfast together. After she showered and then came out to see what I was doing, I was repairing the horse yard fence and she was wearing the smallest shorts I had ever seen. Her top was almost see thru and she didn't have a bra on under her top. I got a hard-on looking at her and she soon noticed it. Then she just said looks like your horny and so am I, so how about you fuck me and we can both be satisfied. It didn't take me long to agree and I fucked her on the hay bales. After she told me that she had wanted to fuck me the night before on finding me naked in bed as she has a high sex drive. Since then she sleeps with me every night and I couldn't happier.