Hey Angel, I'm actually really surprised that you got caught. Judging from your piece your front hairline is very realistic and I don't see any visible knots. The density is also very good for you. I guess she could have noticed some shine by your adhesive at the front like the other posters were saying. However, if you mentioned that there is a visible contrast in hair color because you have too much red tones she could have noticed this about your piece earlier and became suspicious- which might have lead to her looking at your hair more carefully for other flaws. Either way I think you're on the right track with this, just need to make some small adjustments