How far apart did you send the two queries? And has it been two months since you subbed the story? Or two months since you queried?
It's up to you...I'm not very familiar with this particular market and it sounds like your story might work there. So you could let it sit. If it's been two months since you subbed it, well, two months feels long when you've got something in a pile, but it could be worse. On the other hand, you haven't heard back from them after a couple of emails.
If you want to send it somewhere else but give them one more shot, you could either email them one more time and say you're withdrawing your submission, or say if you don't hear from them by [date you determine], please consider your submission withdrawn.
Personally, depending on when you sent the last query, I'd sit on it a little while longer, but it's up to you.