I always find it odd that the people who complain about others texting while they are sitting in front of someone are the people who are texting while sitting in front of you.

1. Start by making up small stuff to see how far you can go.  Try something like “I milked my dog today.” 
2. If it does not even faze her go for broke say things like “I need you to agree on giving me a check for $20,000 that I will never pay you back on.”
3. Then, get braver and blurt out stuff that if the normal person was paying attention to would admit you to a psych-ward: “Well, I smoked a tube of glue and was knocked out for a week and woke up at the Sizzler eating out of the salad bar while a cat was dying on my leg.”

The lesson learned here is that your friend is a total douche for meeting up with you only to completely ignore and waste your time. You are worth more than that. Find another friend who has an interest in you and not their phone.