Possible guess to Miss Bossy's VA

I'll put this on Scarps much later

I was rescearching some of the voice actors on the Mr. Men Show, mostly Miss Bossy's and Miss Calamity. Then I searched Sophie Roberts' name on Behind the Voice Actors and there was an actress named Michelle Ruff (not to be confused with my friend). Under one of the Aliases was Sophie Roberts.

Now this made me speculated a bit to know if this is same actress who voiced Miss Bossy.

I believe it might be same actress, but I'm still not sure.

Here's some proof.
1. Here's her voice demo. [link]
Now some of the voices aren't exactly like her Miss bossy and miss Curious voices, but some of them sounded pretty close.

2. Connections with the other VAs in the show.
Mr. Noisy and Miss Giggles VAs (Richard Epcar and Reba West) are involved on doing voice acting for animes, and Michelle seems to be part of it as well. (eg. Epcar, Forstadt, and Ruff were in Lupin the III and Lucky Star)

So what do you think? Do you think it's the same actress?