If there was a problem with her mail, or you had the wrong email adress, you will get a reply from the Mail Service letting you know that the email was undeliverable due to whatever reason.  If not, then it is most likely that your email has been received.  Some people don’t check their email every day though.   TIP:

To check an email to see if it is valid or operating go here:

 http://network-tools.com/default.asp?prog=validate&Netnic=whois.arin.net&host=63.214.85.21

and check the box for "Email Validation,"  type the email in below and then hit "Submit." 

It takes a few seconds and then you see "Connected"  which basically is a confirmation that the email is a kosher one.  If not, you will get "Host Not Found" returned.  :) 

I’d say you be better emailing her again and titling the email something appropriate to grab her attention.  Better than than posting here anyway when you have her email and it is working well if you have not had them returned by the Mail service as undeliverable.