Force at second if batter is out at first?

[Cecil4]

You are probably right about the lead, but given the OP's lack of softball experience, it could have been explained instead of dictated.

OP -
(1) in FP softball, the runner may not leave the base until the pitcher releases the pitch. Violating that causes a dead ball and "no pitch".
(2) For the intended rule question's sake, I'll ignore the "small lead".
Your question is about there being a force or not.
No, once the batter-runner is out there can be no force on other runners.