Hi montenell
My husband has been diagnosed with BPD. He will often get distracted or not remember how he was going to end a sentence if the topic was emotional. Have you noticed any pattern in the conversation topics or the way you respond that happens right before she loses her thoughts?
Don't discount trivial things as unimportant to a person with BPD. I'm still amazed at how much difficulty my husband has in prioritizing important/non-important things in life. Even if she blanks out on mundane topics, do you know what those topics mean to her?
I haven't noticed a pattern it doesn't seem to matter if its emotional or if she's just making small talk. Sometimes she just seems to distract herself, starting a conversation while looking at YouTube where she seems to get caught up the video and can't remember what she's talking about other times she just seems to randomly blank out