The Secret that kept us apart

"Why won't you tell me?" Haley asks.
"It's complicated," I say.
"Well everyday for our whole lives you have went to school for maybe 4 days then come back in 2 days or so. What's going on?" She asks.
"When the time is right I will tell you." I say.
"Whatever, so who else have you told?" She asks.
"Just my family," I honestly tell her."
" I guess I'll see you tomorrow Grace, " She says.
"Yea see us tomorrow," I say.
We both stand up and quietly walk the opposite way.
Grace is a 10 year old girl in 4th grade and has been battling cancer her whole entire life. She wants to tell Haley but she is scared it will ruin their friendship. She knows she won't understand what she is going through. Grace is a fighter and unlike most people she is going through everyday weather she will be ok or not. Will Grace and Haley's friendship be ended by this Secret?