I think it would be a good idea to bring them in so she can communicate with all of you at once, as well as individually. It's good she's at least used to patients with BPD, but I also hope that means she's equipped to deal with some of the more severe symptoms that come with it and won't just "tolerate" it. Sorry to hear you can't get DBT in your area. You can work through DBT handbooks on your own, since that helps some people, but I personally need a lot of guidance with it.