Fake family members🙄

I’m posting on here to vent a little bit because I have/trust no one right now, plus you can’t really vent to siblings about one another because it’ll be out there. Anyways I keep finding out that my older sister who I’m the closest to(32) (I’m 25) keeps talking about me behind my back instead of just talking to me. First she was making fun of me for taking pregnancy test and thinking I had a chance of being pregnant (husband had a vasectomy), I was sent screenshots. I let that go and didn’t say anything. Next she told my dad I left his house a mess (I picked up everything my 2 year old got out ect). NOW she’s telling my dad false stuff about her “supporting me”. She has a good job so she offers to pay if we go eat or she just doesn’t say anything and pays for stuff for me. I babysat her kid overnight and in return she said she would pay me or buy me a vape. I asked her today if she could get me one but she didn’t respond. Later my dad asked if I stopped vaping and I was confused bc it was out of nowhere. An hour later I found out she went straight to my dad about it, saying can you talk to her about it I can’t keep supporting her and it’s annoying and asked him not to say anything to me about what she said. Idk it’s just annoying we are adults so I feel like running to mom and dad about stupid stuff like this is pointless. It makes me feel she doesn’t like me or something. If she doesn’t want to or can’t buy something for me or for my daughter then she shouldn’t, I’m not expecting her to by any means.

I want to make it noted that if she does pay for something it usually food, something small for my daughter, or a vape. I’ve only asked one time for something. Ugh