After she finds divorce papers, a desperate make-up artist goes to extreme measures to turn herself into her husbands ideal woman, but when she discovers that he actually dreams of becoming a woman she has to face what is really keeping them together.

some nice re-working throughout the thread.

Just a possibly whacky idea, and not the film you've got on your hands... but just fwiw:

When an out of work make up artist learns her husband wants a divorce because he thinks he's gay, she sets about becoming her husband's perfect partner... a man.

Best of luck.

I agree, I need the right word to really describe this protagonist. She was a spunky, feisty, talented woman, but the loss of her child 5 years earlier derailed her. She is still trying to hold onto some part of her baby, so she clings to this marriage. Any thoughts on one descriptive word for that.

The new version is shorter and clearer, it's good!

I personally don't like "talented but derailed", if only you could find the magic one word that can describe the character in a unique way... it would be perfect. what about "fierce make up artist"? or "unrestrainable"? or...

I like the new version of the logline and the script could be really funny. And you have an excellent ending.

Thank you all for your helpful comments.
Here is a new version-
When a talented but derailed makeup artist discovers divorce papers she desperately tries to save her marriage by transforming herself into her husbands ideal woman.

While the general rule is that a logline (and story) should have one, and only one, designated protagonist, I think there can be exceptions in relationship stories. Such as this one. The big reveal throws their relationship in crisis, compels both characters to make painful journeys of psychological transformation. I suggest that to focus on her is to miss half the story.

Hello,
the story has a potential but I reiterate the comments above: you have to choose what story is the main story and write the logline consequently. It seems to me that there are two possibilities.

A.
inciting event: divorce papers
second act: how to become his perfect woman thanks to her make up abilities
resolution: he wants to turn into a woman
In this case the logline should avoid the resolution but you should include what is the problem she encouters in the second act (without spoiling the resolution)

B.
inciting event: her husband whant to turn into a woman
second act: how she will use her make up artist abilities? To turn her into a man?
resolution: she decides to turn completely into a man and love him as a woman or she learns that she has to give up and find a new man?

The two possibilities are interesting. B is very original but hard to write. A needs to find something to build interest in the second act.

Good luck with "Squeeze"!