Now this might sound a little crazy but I need you to just trust me.
The reason you are here is because a magical gemstone called the reality stone pulled you from your universe into this one. As of right now there is no way for us to send you back. The gem is capable of sending you back but when or if it decides to do so cannot be predicted.
We also cannot predict when or if it will pull another from one universe or the next. But in the many months I've been here I've also seen families reunited after a brief separation. So, it's possible she could turn up tomorrow.