Honestly just tell her, be genuine at least when I talked to people I NOTICED all the reactions even the ones they tried to hide and whether or not they truly cared or not i got on myself a little bit. Never any bad reactions but nonetheless i still noticed all the "this is new to me" reactions. Let her finish speaking, you wouldnt interrupt someone who didnt have 1 so dont do it to someone who does. Just remember life is all about perspective while your thinking "im nervous, because of the silence, she could be thinking hes judging me because of the silence" Just communicate this way ur thinking and youll be fine.