bro. you actually gave her the confidence to spend money by her own will... so now she's got the confidence, just let her be herself for the next 1 or 2 months, see her spending habits and you'll realize if she is spending justly or not.... even buying grocery and seasonal clothes cost A LOT these days and all that comes under necessities of course.
our monthly expenditure goes up to 80-90 thousands a month, excluding kids school fee, but at the end i know my wife spends it on my kids and family's well-being and happiness, especially in case when their father (me) is not around them ... so, sometimes, you have to digest these kind of shocks with super shock absorbers : ) ... groceries prices have skyrocketed after tabdili : ( ..
i'd suggest to wait and see at least for a month or two.. if she keeps spending more than your expectations, then you can politely explain to her that why you want her to spend less amount of money ( of course because you want her to be with you and for that you would need money)