Obviously trust is a very important aspect to consider. I have been with Mistress Ayn for over a decade so yes, I trust Her implicitly and without reservation. Has She pushed me to my perceived limits, YES! That should be expected from an excellent Domme. Has She pushed me beyond those limits to help me grow, YES! She has. And YES I was surprised how and when She pushed me to a new level. I can't think of a single time over the decade that I didn't trust Her in everything we enjoyed together.