Fantasy Lover question

I read a book about 3 years ago, maybe on watt pad or kindle, but I can’t find the series anymore. In it a girl is hiking and enters a gazebo and gets transported to another world where she finds a spellbook from an ancient dead sorcerer. There 4 kingdoms with different species and the king of each species can command his people to do anything. There’s also dragons and I think other things called ixens, that are like vampires with spikes in their hands, which the MC turns out to be, and she has a power she needs help controlling. And at the end of the series when she marries the bad boy prince from the evil kingdom there’s a flower on the tree she planted that shows she’s pregnant and it ends there.