The reason why she did not release Your Love in US at the same time is because she can't promote both in UK and US. UK is her main market yet she is struggling to get radio support so she has to really focus on promo there. US is even worse so she needs a well-planned promo campaign. it's really simple. I think they're releasing Your Love in the coming weeks, I imagine it would take a lot of planning to promote someone like Nicole.
I doubt there's a 2nd single next month too. Who releases a new single one month after the first one?
With the VMAs, unless Your Love smashes in the US, there is no way she can perform there unless her label is willing to risk a LARGE amount of money to buy her a performance spot considering her status. Only in our dreams.
