Short films can qualify for a nomination by either receiving a theatrical release or a qualifying award at a competitive film festival (such as the two awards Kayla won at Sundance and SXSW). Once qualified, then the films get sent to Academy members who vote to advance to the 15 film shortlist stage. So currently the film is in this stage, where it's been sent to Academy members to be voted on whether to advance to short list. The announcement of the short list is usually right before Christmas, and from that list the nominees are chosen and announced in late January.
So while the window for votes is closing, there is still an opportunity to reach Academy members to get them to watch it and hopefully vote for it to advance. However, the cost to promote a film to get the nomination is significant, and they've elected to forego a paid PR campaign and instead focus on developing the short into a feature (the short is a segment of a feature screenplay she has written). Here's an article that does a very good job of explaining the whole process.
https://shortfilmoracle.com/how-to-get-a-short-film-nominated-for-an-oscar/#:~:text=Since 1983%2C Academy rules have,Short Film Qualifying Festival List.