
Hi Susan,
Have you tried taking her somewhere regularly (as in every other day at least but preferably every day) that she can see lots of people but not have to interact with them or have them directly approaching her? Try places like outside a shopping centre, in a park near a playground, sitting on a bench in a pedestrian precinct, walking round a car boot sale, garden centres, a village on market day, in a pub or beer garden. Busy places but not bustling if you know what I mean ;)
Also while I'm sure you're remembering not to reward or condone her lack of confidence by fussing her when she's nervy or unsure, you also have to be vigilant and remember to praise her
every time she doesn't show an adverse reaction. It's easy (been there & done that myself ;) ) to look for the problem so intently that we fail to notice a nano-second of the desired behaviour but it's important that we do praise for that tiny moment of correct response.
The more often she can get used to people being around who pose no threat to her, indeed show little or no interest in her, the more quickly she will start to relax about them. The more often you habitually do the same thing and she has no negative experiences, the more quickly she will come round. HTH, regards Teri :)