Helping friend start business...salary?

A friend of mine is starting a business. I've helped out here and there without reimbursement. She has now asked if I would like to help out more consistently. She can't pay me now, but she would like to work something out if and when she starts to make some money. We are supposed to meet to discuss what this would look like.



I have no clue what to even come to the table with as far as reimbursement? I'm a stay at home mom. I see my responsibilities as meeting with other businesses trying to sell the product, maybe social media help, making calls....I don't see my responsibilities being one single area. She is just overwhelmed and needs another hand.



I know this is vague, but I don't even know how to start this discussion?



Thanks for any help.



- Joan