Doing that really simple gesture of apologizing quickly and moving on shows the other person that you care.
Charlie left Charlie's house, taking Charlie's dog with Charlie.
Our suppositions are not always correct, and just making one, either right or wrong, can send a powerful and damaging message: you must look a certain way to signal your gender.
Or, as we like to call them, your pronouns.
Using the wrong pronoun can make a person feel uncomfortable and possibly invalidated or alienated.
When someone is referred to with the wrong pronoun, it can make them feel disrespected, invalidated, dismissed, alienated, or dysphoric often all of the above.