What would you do if you are preparing a soldier for a board, but they do not seem to be progressing towards being successful?

Before I say anything, I’m not the type to bash on others I’m just looking for honest opinions on the situation.

I currently work with a soldier, she’s a SPC. I say ‘work with’ because her supervisor is my SSG, not me. Tomorrow morning I will be sponsoring her for a mock board, not by choice. My SSG will be one of the members of the board along with my 1SG as the president. She’s been in a few months shorter than me but I don’t think she’s ready. I feel that way because of the many mock boards she’s been to in the past and studying with her I can tell she’s not. She somehow still gets the motto of the unit wrong. My NCO has not given up on her but, after I have worked with her for the past year before I got promoted, I sadly have. I’ve tried several times teaching her how to fix or work something but a lot of things don’t stick. She deployed with my battalion to Europe beginning of this year (I couldn’t go because of my dwell time) and I heard way too many stories from people she worked with of her messing up or doing something weird. One of them being her going into the fridge, taking a bite out of someone’s sandwich, realizing it had meat in it (she’s vegetarian), then throwing it out. Anyway, now I’m getting a little off topic but my question is what would you do in my shoes? Would you continually try to work on her like my NCO is or would you avoid her?

I understand we’re in a SOF unit and most things are relaxed but we still have a standard to uphold, right?