The lady looks genuine to me - the stump is actually a pedestal that also acts as the flower frog, I have found that earlier bowls with central figures seem to be in two pieces, later on you get three pieces (bowl, frog, figurine) for e.g. Inwald's 'Poisson Volant' anyone any idea why that is?
Here
http://www.black-poppy.co.uk/mc/czech/list.htm Top right hand corner 1930s two piece version
http://www.pressglas-pavillon.de/Top right hand corner what I believe is version made post war up to 1960s
I have both versions and from the base ware and scratching I have concluded the blue one on the Black Poppy site like my own is 1930s, the amber three piece version is so clean and new looking
The eBay item is in two pieces which is a good indication
I believe it is by 'Cambridge Glass' USA - take a look at the below link, the ridged pedestal is typical of their work
http://www.black-poppy.co.uk/sold/cambridge/list.htmOn the same site is the exact same model of figure as one being sold on eBay
http://www.black-poppy.co.uk/sold/cambridge/me17.jpg small green, it does not have the ridged or gadrooned pedestal/frog but they did smooth versions as well, the point is the shape is an exact match and you can see looking through the different pages on Black Poppy that the base is very ‘Cambridge’
As to the bowl, there would have been different shapes, and although it is not shown on Black Poppy site, I am sure it is original and Cambridge as well
I do think the price asked is a bit steep, but that is just my opinion, I am sure Black Poppy would be pleased to advise you