Am I being unreasonable?

My husband is working really hard to get a buisness going. So sadly he is not bringing amy money in currently. I have an ok job. So am able to keep us a float.
Occassionally he asks his mom to borrow money. He needed 300 to get a liecence re issued. She paid for it. I thanked her and said i will give u bacl some
I just gave her 160. She started going off about i said id pay her back and her intrest on card is high and she has given me rides now she wants gas money too... blah blah
. so i said "seriously... i just gave u 160. Ur gonna have to wait. We need food and a house with elsectricity too
. she's ghosting me now and is trying to start a fight between me and her son. She is so selfish and narsasstic. Was it something i did or is she ungratefull?
Just shocked at how self involved she is.
Am I being unreasonable?
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