What will be your solution to this case, Fire the person, deduct the money off her salary or what else?

There is a situation at home. We have a madi taht comes to the house to do house chores 3 days a week. This maid had been with us for more than 10 years because first she assisted my grandmother at my house while my grandma was ill and living at my house for some years, so she was there to assist her but from time to time this maid also help around the house, then after my grandma passed away, my mom told her to stay at home to help us around the house doing house chores, the years went by (like 3 after my grnadma died) and my dad got sick so she helped us with my dad assistance as well. My dad died almsot 8 years ago and my mom told her to stay with us to continue helping us and also to help mom with house assistance besides doing house chores. This maid my aunts and cousins know her since the years she assisted my grandma. This maid , according to her she has fond of my relatives. For mothers day (only to my mom) for Christmas, this maid always give my sister my brother my mom or me gifts. But this maid has soem flaws, she is a bit of manipulative or like to win my mom heart by convincing of things beause mom is a soft and has a good heart. Also she has this flaw of when she cleans stuff in the house, she put things in another place different so we assume the thing is lost, stolen or where she put it, when we ask her she tells us where she put the item, but when she does it at the moment she does not tell us.

This is something my brother can't stand, that she has my mom wrapped around her little finger and my mom defend her for certain things. My mom is now an elder woman and even though she is independent in many things, it is important for someone else to be in the house to assist her, my mom always will thank her for assisting our grandma and dad at home when they both were alive. I think this maid has problem of try to understand things, and has no initiative I dont know if that is a mental issue.

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Well it turns out that my brother lost some money last Friday at his bedroom and he is 100% where that money was as he had never spent it and it has been there for a long time and told us he is not crazy or distracted, he is very sensitive when it involves money. He says he can't say she took it and call her a thief cause the maid can sue us as there is no proof if the money is misplaced or the maid really took it but does not want to say.

My brother is angry and he never really had trust the
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maid anyway but my mom never had wanted to fire her due to the years with us and the time she assisted grandma and my dad. He says one way or the other his money has to appear, if it was for him we should fire her long time ago but the house belongs to mom not to us, it is my mom decision. If we fire her we have to pay her a lot of compensation, moeny we dont have now, another option will be to deduct the money from her salary each week. The maid cleans my brother room
What will be your solution to this case, Fire the person, deduct the money off her salary or what else?
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