<human>: Can you give me the gist of the text in a nutshell?

We have been married for last 7 years. For last few years we have been fighting regularly.
I am not a native speaker of English so please bear with me.

My wife is not satisfied with current things.  We both are working people. I am 35 and she is 32. we have separate accounts. She does not reveal her banking transactions to me. I want to have a control on money for our better future. So sometimes I want information on how the money was spent etc. She is annoyed with this.

She keeps on demanding like we buy new things. I feel she is too materialistic.
She is also not wise with money. She spends some of her money on expensive things like shoes etc. So I try to control the spendings.
Usually she tells me she wants some new thing. My reaction is always not positive. This creates conflicts.
She says I am too tight fisted.

Also I feel she is not living up to my expectations in bed. She is not receptive when I try to initiate sex. So she tries to control by not giving sex. I pretend I dont care on this but I am worried. We are in a conservative society so we cannot separate. Also we have a 4 yr old daughter. I hear stories of people loving their spouses till death. I would like our relationship to be happy and full of love for both of us.
<bot>: We are having frequent quarrels over spending money. perhaps we are not communicating the right way. and it is affecting relationship. I need some reddit wisdom on how to handle this.