Might take a look at Temtem and Cassette Beasts to get that Pokemon fix.
The Creeper World series, or Kingdom Rush for tower defense a la Bloons... possibly Mindustry or Factorio as well. Start with Mindustry and if it does it for her then you can grab Factorio as well.
She might also vibe with roguelikes considering she liked Vampire Survivors so Enter the Gungeon, Binding of Isaac, Realm of the Mad God, Slay the Spire, or 20xx/30xx might be up her alley as well.