This is a Lora that I made after finding it difficult to make a more... subtle expression?
Half-lidded eyes, a slightly open mouth, and blushing, that's the expression that this model makes.
Trigger word is "dazed_af"
If it doesn't seem to work, try combining it with the tags "tired" and/or "embarrased", I've found that it gives decent results. Also it works with guys too!
Recommended settings is 1.3.