Should I bring this up with my relative knowing that it may cause an intense argument?

A close relative of mine got 3 dui’s in the early 90’s. Last summer, 3 months after getting her driving license back, she got another. Then she drove anyway and got a driving while revoked offense. She is on probation and supposedly working through the drinking problem. She recently graduated a para-health program, but hasn’t looked for work because she thinks that with her record, and age, she wouldn’t get a job. She asks me for money occasionally, earlier this week I gave her $20 and now she needs another $50. I know it’s not a great deal of money but last night on the phone with her I could tell she was drinking. I am a bit irritated that if she is desperate enough to need a little cash, how can she afford to drink? Should I say anything? I don’t want her to get all defensive, but I know she was drinking. Should I bring it up at all?