There are a number of online art groups where you can participate (or not participate) as much as you wish and that may be a way forward for your daughter because it's such a supportive, encouraging environment.
I don't really follow any groups that follow the style of what you have posted, but there must be some somewhere (most of my interest is with sketching).
A lot of online art-based organisations have great communities ( Sketchbook Skool, Skillshare, Urban Sketchers ).
It saddens me that a 20 year-old has anxiety. I hope she finds a way forward. Art can be a route.
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