Sorry, I have no experience to comment on the longevity of 2019 base model spec.
If you like the colour of 2019 ladies comp, go for it. Try asking for a free upgrade to 700wh battery. There will be no ladies specific models in 2020. Instead all 2020 Levo's in size S come with a ladies saddle.
The negatives on the 2019 base model is cheap forks and no dropper seat post. The 2020 base model fork (
RockShox quietly releases budget ’35’ fork) is comparable to 2019 comp model fork. Good discussion on forks and battery starting
here (on page 23 on this thread).