Churumbeque, I'm not sure if you can read the part where she's already stated the she's going to geld him? If not let me say it again it...Read it slowly so you can understand.. She's going to geld him. There.
I'm pretty sure that Sierra knows what she's doing and if she's made the decision to get the mini she'll be responsible for he and the mare...The mare won't be bred. End of story.
I personally know Sierra, Dodger, and Dodger's current owners..I have for YEARS. Sierra is a responsible owner and I'm pretty sure she knows what she's doing. Her mare gets along with any other horse she's ever been with. Including all of my horses, she has never tried to hurt any smaller animals either. Her mare has been around smaller ponies at my house and our dogs running around in the pasture. She has a "whatever" attitude and will just walk away from a horse trying to play with her. Dodger has been turned out on grass pasture with no problems that I know of for years. He has also been out with a good sized herd of mares and geldings. None of the mares have ended up in foal and Dodger doesn't exactly act like a stud, he almost as the attitude of "doesn't know" what he is and that he still has all of his equipment.
I see NO problem with going to get Dodger tomorrow and letting him meet Penney. Dodger lives less than a mile from Sierra and maybe two miles from me. We are good friends with his owner and both have worked with her and her horses before...I also know that if things don't work out with Dodger and Penney, that his owner would take him back.
Sierra, if you need to you can borrow my trailer to go get him...Actually I'm not doing much tomorrow and I could go with ya! Just call or text me whenever..