[quote=@mdk]
To make things easier, typing out what she's thinking or meaning to say would help people interpret her "Glare" or "Sideways looks" or whatever. 
[/quote]

Definitely recommend.

[indent]She glared at Thomas, eyes wide and gently pulsing. [i]How dare you speak to me like that?[/i][/indent]

Seems legit. It's basically dialogue without sound; she has used her own words to express how she feels to the reader, but the italics clearly indicate that it's an internal thought rather than an audible utterance.