Remember OP, this is not a woman you are going to want to be involved with or friends with.
She will be someone you will want to actively avoid.
She has shown you the type she is.
You will ALWAYS have to be alert to her, anytime she approaches you, as her type are always out for something.
She cares NOTHING for YOUR opinion of her.
All she cares about is what she can get out of you.
You will be kicking yourself if you agreee ANYTHING, because it will be far messier to extract yourself afterwards.
Far better say "afraid not, I don't EVER commit to arrangements like that, as they wouldn't suit us".
Look her straight in the eye.
I would strongly suggest you start practicing in the mirror a variety of answers to questions.
"Sorry doesn't suit me". Is fast.
Do not linger, always be rushing to be somewhere.
Don't be the least bit surprised if she doesn't let it go.
Her type don't give a shit, they will try and push and push hoping they can bully you into doing what suits them.
Don't give her your number either, people like her love to text asking for favours of those around her.
I have had my own experience of a neighbour like that years ago wanting to impose.
After telling her that "sharing lifts to activities" that she wasn't really available to do anyway, didn't suit me, she continued to text.
I no longer replied to her texts.
I said it didn't suit, and refused to engage further on the matter.
She had her nose out of joint for a long time and I simply pretended not to notice.
These people are EVERYWHERE.