So frustrated

My s/o and I live in his moms house. We pay $260 plus $500 for food and give all my wic food to her as rent. He cleans the backyard (rake and pick up dog poop and feed dog and blow the backyard) and I clean the house (dishes, sweep, clean bathrooms, etc) as our chores.

We got into an agreement with his sister. She got into a contract with a furniture and phone company ($80 a month for furniture and $100 for phone) for my s/o.

My s/o was working with his stepdad at the time. However work was slow so now we had no means to pay the phone. His sister wasn’t concerned about the phone but more so worried about the furniture ($80).

Today was a good day. I was feeding my daughter and the furniture was paid off from last month. However we still needed to pay this month.

I was in the kitchen talking about how my s/o wanted to by a new tire since it ripped and then his brothers s/o (let’s say S) came in and suddenly said “well yeah but you need to pay her mattress because it’s under her name just like the phone”. I was like okay... because the agreement was made under my s/o not even me. And also it was totally random!

S always tries to make me look like the bad guy for some reason.

But I know she doesn’t like me because everytime I do something (aka open the fridge door) she looks and me and says “make sure you don’t leave it open” and when I say “oh did I before?” She gets all quiet and goes “no just don’t”.

She always judges with my daughter and says “you need to give her this medicine or that because imagine this or that” lr “don’t give her a shower in the winter she can get sick” like I don’t have empathy.. and she always says it like I’m the bad guy and like she’s urging me to have more empathy which I’m like what..

When I was trying to be friendly with her I told her I was thinking of moving to my moms so I can get more on my feet and she goes “oh would your mom take you back?” And I’m here like what the hell.... and then she said “you shouldn’t keep kids away from the father” even though my s/o and I agreed it seemed like a good idea to do so and he would visit my daughter a lot.

SHE ALSO ACCUSED ME OF TRYING TO MOLEST A LITTLE GIRL. The mom knew it was bs. Then she blamed it on her child hood trauma and I was like well shit okay but that’s still jacked up you tried to say something like that! Even the girls mom laughed and doubted her

she keeps telling us we don’t pay for anything just because she pays the electricity and water (I asked her what she pays per month for her part she says $300) and I’m here like... we pay the same amount.. difference is that she pays the actual bill and We just give the money to help with whatever they need.

Ughhh guys idk

The only thing is I feel bad because she’s legally blind. So whenever it’s chore time, my MIL says that everyone has to clean for her because she’s blind and she came from a meth family and her dads a drug dealer or something so it had to do with her past but still!! I never did anything to her or talk shit till she started trying to get people to think I’m bad.