Iwouldlike .. as a huge Austen fan I know what your mum means. I've never found a spin-off Austen book that wasn't rubbish, Death in Pemberley probably being the worst of all time, so I approached this series with grave doubts myself.
However Lost in Austen was really charming. She should give it a try.
I saw it first time round and loved it. But I bought it for my mum who's a big Austen fanand don't think she even watched it (didn't like the idea of it!). I know what you mean about the guys...but will always love Colin! So many books I'd love to visit...might not be brave enough for tardis though!