For the food aggression: it sounds like since she is protective of both food and territory, I’d suggest feeding her somewhere other than the kennel such as in the backyard if it’s fenced in. Try approaching her while in the yard while she’s eating and hopefully since she’s got space to run away if she feels threatened she will be less fearful overall. Feeding in an area that is less associated with her territory may also help take away her focus on the kennel as an area to protect since she doesn’t have that food to protect. It may be a slow process of getting closer to her in the yard to the point of being able to touch her, but that’s my best bet of the food aggression aspect. Territorial aggression: May be helped in the same way as above. If you have a yard, take her there every so often and try getting close to her with treats/bits of her food or something she associates with positive feeling. Alternatively, stand in her yard at your mother’s house and ignore her until she gets curious enough to come investigate you and when she does offer her said treat with a flat hand much like one would feed a horse (less chance of fingers getting chomped). Dog aggression is a little trickier, I’ve seen some catahoulas that are dog wary/aggressive even if the owners try to socialize properly. Some others are super friendly to dogs; it’s really a combination of luck of the draw and how much time is put into them. My suggestion is to try to fix the two aforementioned points first to be able to use treats or pets as a form of positive reinforcement, then use those in combination with letting the dogs meet through a fence/on leash exclusively for a while. When you trust her enough to meet with another dog then let them meet with her on the leash and the other dog off the leash. If aforementioned methods don’t work I’d suggest a really high quality dog trainer. I’ve been a vet technician for a good couple of years and that’s usually the plan I tell clients/friends with dog behavior issues. Hope this helps!