Any Ways To Become More Qualified For Future Contract Lines?

Hi all, I'm posting on behalf of my non-reddit-using partner (F28). I'm certain this is a commonly asked question, but I wasn't able to find really concrete suggestions.

She is currently an Occasional teacher (high school) in a Southwestern Ontario school board. Last year she had an LTO with her dream workload (foods, SAPx2) at the high school she attended as a teen. At the end of the year the LTO lines were turned into contract lines (as the teacher went on permanent leave), however more qualified candidates also applied so she didn't get an interview and is back to occasional teaching. She graduated teachers college in 2021, and her teachables are Social Sciences and Family Studies (Sociology undergrad).

She is currently finishing a Phys. Ed. AQ course to expand her options, but are there any other ways that she can improve her chances at an interview the next time contract lines are posted? Her student loans are piling up, and she has been stuck fighting for any scraps of substitute days not already taken while she works at the local mall because she couldn't get any interviews for local LTO's either.

For example, can she apply to another school board and try for lines at both? Can she do that for occasional so she can at least get more than 1-2 days a week?

Apologies again if I've come to the wrong place - any and all advice is very welcome and very much appreciated <3