Welcome to the forum Mary-jo.
I don't know what familiarity you have with e-bikes, but they do not perform like mopeds so being able to pedal effectively to assist the motor is essential. That usually isn't possible with a moped style seat due to its width at the front obstructing the thigh movement.
However there are comfort style saddles for bicycles with many designed specifically for women, giving the right support at the rear of the saddle but still with a narrow enough front of the saddle to allow full enough up and down thigh movement,
Here's one of them
on this link with a couple of favourable reviews.
And a second one
on this link.
Also from the same dealer, if you scroll down
on this page you'll see a variety of others further down the page, though many not in stock at present. However it will give you an idea of the many that are on the market in differing styles, putting comfort as the priority.
.