What you need to understand is that she looks at everyone in her orbit as a potential source of money or "stuff", be it food, groceries, clothing, etc. She's already proved that to you, and be certain she's used others in the same way. She's a "Karen" in the making, feeling entitled to anything she desires, and as her child ages, she will come to resent him/her as the child will require a steadily increasing amount of resources, and the time may come when CPS is forced to put her child in foster care.

Were I you, I'd gradually withdraw from her life, to the point where you are LC or NC with her, as you will cease being her friend, and simply become a "mark" to draw from.

I wish you well.