It depends on how long after she took the test that she went back and had a look at it. I know with my first BFP I was so excited and when i went back and had a look at it to compare it to the one I did the next day the line had almost disappeared :eek:

I have to agree with Jooleshere, I think all DH have a thing with being able to see the feint BFP.
to your sister for a strong