It amounts to nothing as it was a single word and they could spin that any way they want, it's even a generic word, lol. The "worst" interpretation on that tweet could be "we were inspired by said movie to create a relatable product" which is not an unlawful thing to do.
I lack the knowledge to make a judgment one way or another about whether this will go anywhere, because I know very little about this area of law, more so in the US. However, this idea that tweeting the title of that specific movie in the context of such a product release couldn't possibly be connected to one of those voices having a similar cadence and sound of a specific actor in that same movie they approched beforehand, couldn't have no legal bearing seems naive. Is it that doubtful that a high-priced legal team couldn't bring a solid case, leading to a severe settlement, or more if she wants to create a precedent?
Clichéd Mafia talk is not a foolproof way to prevent conviction in most jurisdictions.