This IS NOT, I repeat, IS NOT an allegation of cheating. I lost and I lost fairly. I just want to learn what I don't know.

In GC with the current meta. My Onslaught is r4 sig 140. Didn't catch the rank of Silk but assume it's 2 or 3. I get a r4 Onslaught at a mid sig isn't super potent. I want to find out what I don't know about Silk. I'm assuming my opponent is quite deft at intercepting but how did Silk wreck me in 26 seconds? I don't have a high level Silk and have never played with her so I want to learn what about her mechanics or kit that allow for such a large whooping in a short period of time.
Any and all insight is appreciated.