I think extroverts are being affected quite badly by all of this.
In fact, the Italians are going crazy over being closed in, very difficult to contain them!
One of their expressions of frustration found an outlet with the various flash concerts they organise, everyone on their balconies singing and playing music.
Also national prayer moments, candle lighting.
Your friend could think about organising something online to keep her in contact with others, and at the same time doing something useful.
A daily chat? Update about services? etc. There are lots of things that can be useful.
My daughter is a Gemini with her Sun on the descendant, opposed to her Sag ascendant.
And her Sun is trine her Moon in Aquarius. She is very much as social butterfly and loves to be out doing things, with her friends or family.
She lives with her boyfriend so she is not quarantined alone. But she has been doing 'group Skype' sessions. She and her friends had morning coffee together online, played card games, like WAR, remotely online. lol