FYI, working, so these are while taking very short breaks.

A good glamour / obfuscate trick trick Ash should be able to do is:
Walking by and not being noticed or recognized.  Or maybe being mistaken for someone who looks similar.  She could do the scary stalking trick where she seems have popped up out of nowhere when she was standing there the whole time.  The VULGAR magic difference is that she could pull them off with her friends watching.

There are also plenty of animal tricks possible ... like summoning a roach to crawl next to one of the mean girls.