“After the death of her father, a timorous young woman struggles to put forth the effort to attend the college of her dreams due to her fathers wish for her to join the military while being threatened by the expiration date of her scholarship.” (44 words)

I agree with the assessments of Nir Shelter and mikepedley85 in that right now you’re only focusing on the internal aspects of the character. Many films feature characters with inner conflict, but what a logline should convey to the reader is the external(or at least visual – meaning you could certainly make a film take place inside a character’s head as long as it represented visually, like “Inside Out”(2015)) conflict.

Like Nir Shelter, I find??? I really want it to be about the consequences of her decision which is to go to college and the guilt she feels??. to be a problematic approach. But the problem I see with the logline is that doesn’t describe a clear goal, it also doesn’t offer an endpoint for the story.
In addition to what I’ve said before, the logline makes me say: “So what?”

“…struggles to put forth the effort…” Does not convey a visual action. Films, and by extension loglines, are about visual events and actions taking place. Not only that, why does her father’s wish matter? It’s her life. She’s the one who has to live it, she has to make decisions for herself. The film “Ladybird” (2017) deals with a similar matter. The main character has a certain dream school but her mother-the one paying for it-can’t afford it so she wants her daughter to go to a less expensive school. This differs because the main character is restricted by the financial situation, which gives her parents more input than if she were paying for her own schooling. In other words, this setups a situation for conflict.

I disagree with Nir Shelter that turning this into a novel would fix the issue. I think the real issue is that there isn’t an effective, compelling conflict created by the situation your logline describes.

I suggest thinking over your concept and coming up with a clear goal that creates conflict. Some things to think about for a revision:

Hook – what about this story will make someone want to read the script?
Inciting incident – How does this event affect the protagonist, and force them to commit to a goal?
Goal – What?must the protagonist accomplish? Use words that describe visual scenarios. (Example: Luke Skywalker must help the Rebellion destroy the Death Star)
Protagonist – what drives this character? How exactly does the inciting incident affect them and why?
Antagonist – Why does this character oppose the main character? What is their goal? (An exercise I use is to write a logline from the perspective my story’s antagonist).? I’ve included some video links which talk about character in film.

I recommend watching “Ladybird”, “Edge of Seventeen” and other coming-of-age films and examining them to see how they set up conflict, what that conflict is, and why it matters to the characters, and how the filmmakers make it matter to the audience.

It sounds like the concept has more sci-fi elements than either version of the logline describe. I think Foxtrot is right that the logline attempts to juggle too many parts.
To me the most important parts are that the world is post-apocalyptic because that is what leads her to have to grow and find her own crops. Being mute doesn’t seem to add to the logline without the inclusion of her being forced to interact with other people and that being a hindrance.

“As the vegetation around her dies, a mute girl searches for resistant seeds but becomes a slave in what is left of modern society.”

The problem with this version is that it second half describes what may be a complication in the script. But it isn’t the goal, and not the inciting incident.

After a disease kills the majority of her crops, a mute survivor must search in a post-apocalyptic world for resistant seeds while avoiding the remnants of the powerful food corporation which unleashed the disease. (34)

I suggest finding a way to incorporate what actual apocalyptic event occurred. A natural disaster, nuclear destruction, etc. Perhaps including the specific event will make it easier to tie all of the elements of the logline together.

I hope this helps.