Form I-765

First of all thank you for all your blogs and videos on immigration. They are very informative and knowledgeable. I follow your views and suggestions on all my immigration work. I also recommend your suggestions to lot of my friends and colleagues. I appreciate your help towards the community.<br>
I have a situation:<br>
I am in my 3rd year of my H-1B status, my I-140 is approved and need to file for my spouse H-4EAD on May 26, but she needs to travel to India for family reasons in August this year.<br>
Questions:<br>
1) Will that be a Ok for her to travel to India while her H-4 EAD petition is pending?<br>
2) How long will the petition will take to come to a decision (~estimate)?<br>
3) What happens if her H-4 EAD petition gets approved and she is in India? Does she have to go to the US Embassy again?<br>
4) (Being positive but need to think the other sides of a same coin) what happens if her H-4 EAD petition gets denied? Will she be able to retain her H-4 status? Will she able to enter US without any issues?<br>
5) What would you suggest? Will that be ok for her to visit (or) to wait till the decision is made on her H-4 EAD petition?