Can someone tell me who this is?

And what she's done with Jewel Staite?

https://www.youtube.com/watch?v=DfPdcXIgDdk

She's done a good job of copying Staite's voice but she bares not much
resemblance to Staite, and no, it isn't just aging. I wish it was.
I know women get treated worse as they age in Hollywood, but there's
something to be said for allowing your self to age. I mean sure, you
can use makeup and styling to try and look younger but at least look
like yourself and not some completely different younger person. Unless
she's trying out to be the new Doctor on DOCTOR WHO?