If the bad thing happened to her in her childhood, why does she suddenly now struggle to get her life on track?

Presumable there have been a few years between the bad thing happening and her being an adult.

Or has she been struggling ever since the bad thing happened? If so then she isn’t trying to get her life back on track she is struggling for a normal life regardless what it was before.

In addition to DPG’s comments I think the logline is missing the crucial starting point for the MC. Without this it will be hard for the reader to see the character trajectory.

Hope this helps.

Good points raised above.

Also are “…young and independent…” relevant to the story? If not then better to change them to a shorter description that aids the reader in understanding the type of character and conflict she will encounter.

Also “…woman…” is too generic a description in this case; what kind of woman? I find the character’s job a good way to hint at her place in society, out look on life, aspirations, etc…
For example if you define her as either a; lawyer, environmental activist or sculptor. You strait away tell the reader what kind of person she is.

Lastly I would re structure the logline for the next draft. Put the appearance of the ex-boyfriend in the beginning of the logline, then after that what she does.
The reason is that as the reader reads the logline they develop the story in their mind in the same way it would be told in the script/film. Therefore to help this happen the order of the events and actions in the logline would need to follow the same order as the finished story.

Hope this helps.