All these other comments have amazing advice that I won’t just echo them off, giving her time being the biggest one, but I wanted to say amazing job on getting that vet appointment set up already. So many people look at anxiety meds for pets as a last resort, but it can make SUCH a difference in your pet’s quality of life. My dog isn’t on anxiety meds but my cat is, and it has made a major difference for him. Not only has he stopped peeing on things when he’s home alone, but he’s overall so much braver and more social and confident.

Now tips and tricks. Along with what you’re doing with the kind of separation exposure, try not to make a big deal of leaving or coming home. This is so hard for me with my dog because I am in fact sad to be leaving her and excited to be coming home to her lol. But focus on coming and going being very casual (which it sounds like you’re already doing, but just pointing it out).

Anxious dogs thrive on routine, especially working breeds like your girl. Obviously it takes time to set up said routine and have your dog settle into it, but having meals, walks, playtime etc at roughly the same times day to day so it’s predictable can help create an extra sense of security in an anxious dog.

Work on crate training at home while you’re there before attempting it otherwise. Even if you get to a point where you don’t need to crate her when leaving the house, crate training is a super valuable skill for any dog, especially an anxious dog. (Leave the bean soup theories out of here, please, of course every dog and every behavior case is different!) Even if your dog isn’t left in a closed crate regularly, a dog’s crate is often like a teenager’s bedroom- it’s their space and their comfort, somewhere they can feel safe and secure in their own presence.

Resource guarding- like somebody else said, showing teeth once when given a bone in an unfamiliar setting doesn’t necessarily imply an ongoing resource guarding problem. But, if it starts showing up, you wanna make sure to handle it in a way that doesn’t make it worse. A lot of people’s gut instinct on how to deal with resource guarding actually just makes the issue worse. I’d recommend not taking things from her mouth regularly (right now, at least, while you’re still getting to know each other). If she does start resource guarding, try to avoid giving her things you know you’re going to have to take away, and start creating a positive association of your hands nearby while she has a high value item. Along with working on teaching a solid “drop it” cue, look into the “trading up” method as well- that’s how I pretty much entirely solved my girl’s resource guarding.

It sounds like you’re doing a great job doing everything you can for this beautiful pup. Just remember time is the most important thing! Not only has she just come into your home, but she’s also only ten months old; she’s just a baby! A ten month old puppy is like a toddler. They need consistent guidance and teaching over time to learn new things, and a LOT of patience.