Well said.Notice you are concerned about how you appear as opposed to handling her most effectively.
Notice you are investing more of your two most valuable assets--time and attention--into her as opposed to withdrawing them.
"Disappearing like a puzzy" is a social construct, which has merit in dealings with a random girl or guy.
As to your girl or date, it could be argued that your staying following her conscious disrespect is "staying with her like a pvzzy" as opposed to her losing you.
It could be well argued that staying following her disrespect is a sign of a weak or absent frame, and an overt signaling of non-existent boundaries.
Remember, boundaries can be implemented overtly or covertly.
Considering :
Within this context, need not tell her not to disrespect you as she is well aware of what she is doing. Yet you stay.
Action > Words
Overt boundaries not to disrespect when she already knows not to disrespect you implicitly demonstrates (1) You will not walk away if she chooses to disrespect you; (2) how to push your buttons (with no consequence) if she elects to; (3) you will give her more time and attention as opposed to withdrawing them; (4) if the disrespect were unconsciously incited by an issue ruminating in her, you are training her not to bring the issue forward for discussion, as there is no punishment of withdrawal imbued in her psyche motivating her to learn how to properly communicate.
The greatest boundary she will feel is her loss of you. Don't talk about her losing you. Don't threaten that she will lose you. Don't delineate the ultimatum, "If you do it again, you will lose me." Simply exercise the boundary immediately ... she loses you.
Any reparation (assuming the disrespect was not so great) she makes will be felt and imbued in her psyche greater than any overt words you could possibly deliver.
Within the above contexts, this is how you exercise boundaries ... powerfully.
Reward behavior within your frame (by acknowledging it exists & thus cultivating its existence); ignore any behavior that isn’t within your frame—like it does not exist, because it doesn’t.
A strong frame doesn’t need defending. It’sself-evident & irreducible. For instance, if someone you barely knew messaged you arguing, “The sky is green,” would you even bother to try to convince them otherwise? Or would you chuckle & shake your head at the absurdity? By arguing a point—especially from an emotional place—you acknowledge the validity of the counterpoint. Another form of qualification.