I think that if she is open to later appointments it might be best if you go to see her earlier on your first visit, or at the very least call earlier in the evening to set something up. There are some advertisers here that are in the downtown area, so you have a better idea of who they are and rates, etc, and you could pm them thru here to find out. I think you will find that they are more receptive to someone they "know" if they are an sp who normally avoids later appointments for safety reasons.
(Sometimes it is just a matter of being booked in advance for an evening time, and your best bet again is to contact them early in the day)