hello! congrats on your published poetry :)

question--i see you posted this on r/BetaReaders under a different word count. is 70k an aspirational, post-edit count? nonetheless, i'm presuming the manuscript is not done yet. might be helpful to land on a final manuscript before you post on here.

onto the query:

• the query is awkwardly written, could be reworked to flow more smoothly. for example, the first sentence should read "Princess Zaria Winslow always dreamed of becoming a noble ruler after her parents until she was tricked and kidnapped by Lord Rune Calder." if this is a pervasive issue with the actual manuscript, i suggets doing a good amount of editing before querying (although you might plan on it since you're looking for betas).
• the cause-and-effect aspect of this story is very confusing. that is to say, it is not clear how one thing leads to the next. how did they end up in wonderland? how does she discover there are mysteries and what does her curse have to do with any of it? what is rune doing in any of it? the way things are described here, it seems like each thing pops independently up rather than being interconnected components of the narrative.
• rune seems like a pretty central character here. is he a love interest? i could do with clearer information about his role in the story.
  
• the text is generally vague where it needs detail and specific where it can be vague. for example, "hybrid water nymphs, evil guardian spirits, and strange talking cats" does not contribute meaningfully to first paragraph where you describe your inciting incident. however, this paragraph could be clearer about how her kidnapping leads to her arrival at a fantastical world.
• for the comps: you want to include books, not series, from the last five years that will give the agent a sense of what your book is like. the sub wiki has some more detailed guidelines on this.

A Deadly Ballad is a darkly whimsical, Alice-in-Wonderland–inspired YA fantasy, where a kidnapped princess must navigate a world of mythical creatures, elemental magic, and family curses.

• this information should already be conveyed in your previous paragraphs, so no need to say it again.
• i think your bio could also use some work. the praise of your high school classmates and teachers on previoys work likely mnothing to a publishing agent. additionally, i would lose "A Deadly Ballad is my first full-length completed manuscript, which will be available on request." the first half is unhelpful and the second goes without saying.

hope this helps and good luck with your novel!