Excellent work! You have drawn her to be very beautiful and adorable even though she is portrayed as heartbroken. Thank you for sharing this with us. With that being said, I think someone is trying to make some money off of this work without your consent on Etsy and they removed your signature from the bottom corner as well.
Is it at all possible for you to commission me a sad Rainbow Dash and Twilight Sparkle (non-alicorn)? I need it for a story I'm writing. If you're too busy to accept this then I'll find someone else, but you drew Rainbow perfectly. I would love it if you could do this for me. Thanks.