SIL birthday

Well on her birthday I didn’t have money so I sent her a very small amount with a message ”bought you a drink”she bull ticked me and didn’t even say thanks. I chilled it though,mine came and she didn’t give me anything I didn’t mind though.

Same day it was a friends birthday and she got her something, even asked me if the friend would like it or she gets something else for her? Told her the perfume she had got was okay.now it’s her birthday again, sh here wondering if I need to get her something🤔 if t was just the birthday I would not think but I help me in lots of ways

like financial but each time is my turn even when she has it she won’t help! So should I buy the gift or send her a birthday message and call it done,I just hate un matching energy.