You didn't do it though and that's what counts. Plus it's not even that bad...Gee I have had tons of stupid ideas in my life (this one wouldn't even make my top 1000 wouldn't even make it in top 1000 stupid ideas I actually went through with )
However, as archipelago said, if it's stg. that's been bothering you for a while, it could have a potential detrimental effect on your RS then tell her. I can't imagine a T terminating over this.