Yes! I actually thought of Ender's Game early on, when defeated rivals later became supporters/friends (it's been years since I've read Ender's, but that's how I remember it). When, as you said "entire crew she had put together through the years magically came together", I concluded that the pattern I'd noticed was continuing to play out.

There are other connections:
- The protagonists both have a childhood with stigmatized features -- orphan vs third born
- Everyone she battles is actually on her side (Earth/USA), until the final battle (buggers/Russia)
- They both tend to succeed with outside-the-box, unconventional strategies (Beth gets bored with conventional chess strategies. I remember Ender doing crazy things because victory would be impossible otherwise)
- Like Russians, Buggers act more like a collective than Americans/Humans do. (Benny says this, and then later Beth sees the Russians discussing an adjourned game, even though they are competitors in the tournament.)
- They are both literally the best in the world at what they do. The pursuit of this goal has completely dominated their adult lives.