I think your voice matches Silvia pretty well! You really did capture that playful attitude of her's. The one thing I would recommend is to not talk as fast, your audition sounds a little rushed and not natural. I also feel like you aren't talking in the proper tone in some areas almost like the emotion you are speaking with doesn't match that of Silvia's when she says her lines in the comic. Specifically around "I'll just go back to bed now" and "Nice to meet you, let's be friends" Is where I noticed the most difficulty. But I do think it was great! ^^