Decide what you are willing to do and how often you want to see her.
If you drive to church, then I see no reason not to pick her up, and if you both go home again at the same time, take her home to her place too. But make it a rule, that there are Sundays were you can only take her to church, bcause you are going on somewhere else afterwards.
This may involve your having to take a roundabout way home, if you haven't anything fixed up for that Sunday after church, but that is better than not setting boundaries.
STOP lending ´her money ¨you are only encouraging her to depend on you by doing so. If not lending her money, makes you feel lacking in Christian charity, give anonomously to your church or a charity of your choice.
Be frank but polite and tell her that you value her acquaintanceship, but that you have neither the time, nor the desire, to drink coffee with her all the time, or answer text messages and phone-calls. However kindly she means them, she is interrupting your day with them.
If you want to, invite her for coffee once a month or so.
I have had a similar problem with a neigbour - an Arabic speaker, which I am not, who will not take the trouble to learn Danish properly and made incessant demands on me to help her contact local authorities and the like, lend her money and so on.
On one occasion when we had gone in her car to Flensburg to do some shopping, she had not bothered to change money into euros and blithely asked me to pay for her shopping and she would then repay me in Danish currency. I refused, pointing out that if I did that, I would have no euros left for the purchases I had specifically gone to Flensburg to make. She went into a huff, and I ended up taking the bus home, only 7 km, but the principle of the thing rankled.
This episode has stopped her incessant demands for help. I had offered to teach her Danish, which I am well qualified to do, but no, anything that requires work or application on her behalf holds no interest for her.
Your neighbour sounds the same type of person - if you give, she will go on taking and never make any returns.
You are not lacking in Christian charity, either when you expect her to show you consideration and respect, or when you stop enabling her by lending her money - offer to teach her how to budget properly, and I suspect that will meet as cold a reception as my offer to teach my neighbour the language of the country she has chosen to live in did.