How to give without being taken advantage of? ?

How do you know when to help ppl who actually need help vs those who want to just live off you. I have a big YouTube channel and I made friends with a smaller YouTube channel. I liked them as a friend so I shared their YouTube channel with my subscribers which brought their subscribers to 1k. I even donate to their channel once in a while as this friend offers “advice sessions”. This friend has confided in me multiple times about how she’s unable to pay her $1,400 mortgage, doesn’t have money to buy her children Christmas presents and her home will foreclose soon. I gave $100 to her for her children gifts. She then comes back and tells me the same sorrowful story so I offer her prayers and advised her to get an actual job instead of relying on her very small YouTube channel for income. She tells me she’s on disability (metal plates were put in her back due to surgery and her diabetes effects her foot) although she looks physically fine to the eyes I will not dismiss her disability. She comes back and asks me to share her go fund me page on my YouTube channel of 50k+ subscribers and says if I can’t she will understand. I don’t reply but give her words of encouragement. Since then she refuses to respond to me. I have been taken advantage of & used for my platform in the past so I’m very cautious. I feel I did enough by sharing her channel with my subscribers, and doing small donations but I cannot ask my subscribers to donate, it’s unprofessional and not fair to them.Thoughts?