"It certainly sounds positively wonderful and fascinating." Helena was definitely the type that would admire the TARDIS. And she'd undoubtedly ask scores of questions about how it worked and the mechanics of creating such a machine that was bigger on the inside.

And her time travel method wasn't the best, but it was as close as she could come to physical time travel without the aid of an Artifact that would have a horrific price to pay for using it. Of course at the time she'd been obsessed with traveling to her past and saving her daughter, Helena wouldn't have cared about the price she'd have to pay. But now she was cursed with a price for even having tried, which was having seen her daughter die while she'd been powerless to stop it from happening. That image was seared into her soul and she still had nightmares about it over a century later.

"Ah, but of course. It is positively fascinating though. The mechanics to even create such a machine in the first place must be both mind-boggling and brilliant." And unlike some people, Helena would dive headlong into trying to understand the science behind it if she could.