so I'm was trying to sell my air conditioner and I guess my bf mom wanted it she's sweet but she…

so I'm was trying to sell my air conditioner and I guess my bf mom wanted it she's sweet but she pulled the I'm your mother in law and I should give it to her free card um you son hasn't put ring a ring on my finger yet, so I basically agreed and she said she will try to give me something for it it's cost me 130 and I used it only for 2 months she freaked when she thought I was going to sell it full price, my best friend also wanted it she's pregnant and will be pregnant through out summer she doesn't have one I think she more important health wise right now plus she was willing to pay for it knowing I'm tight on money...is it wrong if I make up an excuse to not give it to his mom I feel like giving it free because shes my "mother in law" and he fans werent good enough I'm being walked all over. ...