Yes, Effie does seem sociable with other dogs and animals, so Estée is lucky she is just nervous and not aggressive.I think there are steps before that which SHOULD be taken, like for example consistent and prolonged training sessions— Estée admits she hasn’t done this.
Also, there are places to live in London that aren’t a high rise building in a high traffic area. With her money, she could get a really nice walk up flat in a somewhat quieter neighborhood with a small private garden and some residential streets to walk around. Effie might even be less nervous looking out a normal street level window, watching the world go by and seeing people from a distance behind her window, than she would looking down like 20 floors below lol..... and then after being put in an elevator, being surrounded by them. Kind of overwhelming.
Effie seems willing to socialize (on certain terms of course), with dogs AND people which is a great sign. She could end up improving to the point where she can walk almost anywhere with ease, or she could be nervous to the point where she just stays out of the very busy downtown areas. These are things we do for those to whom we’ve assigned ourselves caretaker. If I were Estée I’d just start looking at flats that are more dog friendly.
Did she get the flat she’s in now because it’s so central? What’s the appeal of it?