I think that if you promise something, you must deliver, not change your mind later. That undermines trust and will fester, to be thrown at you farin the future.
Give her the money, make it plain to her that there will be none to follow and that if she gets into a muddle and in debt, she has o find her own way out of it. And you need to grit your teeth and make a promise to yourself, that no matter how much of a mess she gets herself into financially, you will stand by your promise to leave her to sort it out for herself.
My children had to learn that if they got in a mess they had to get themselves out of it. Admittedly they made their mistakes in their first year at university, and we did help them sort their lives out, but every penny we gave them was as a loan and we kept them to the repayment schedule.