Hi Well, you see. There is a slight difference, will and going to is both used for future action, But: Will is when you decide something 'Now' Going to is used when you already have decided to do something in the future. Eg.
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PalinkasocsiThe wife is trying to use explicit irony.She has planned it. It's not spontaneous if she's "trying". Therefore "going to", which is used for plans, sounds better to you, but both are fine, of course.