OP,
Absolutely you can feel irritated.
She is a CF.
She couldn't care less about you or your daughter.
She things you are a MUG, and can be used.
If she texts, tell her it doesn't suit.
No explanation.
If she texts back, don't answer.
If the daughter comes to the door, tell your daughter NOT to answer, that you will.
Tell the daughter " my daughter has plans today, perhaps we will see you some other time, when we are Free, bye".
Stand up for your daughter, make other plans for your daughter.
Do NOT allow this girl to force herself on your daughter's friends.
Be busy.
CF are everywhere.
You need to show your daughter that what she wants counts too.