Collapses and the Rebel Alliance form the New Republic, with Mon Mothma as their first leader, she initiates the peace talks and the de-militarization, at some point a peace treaty with the remaining Empire probably now FO is reached, they scurry away to the far reaches of space to get their shit in order, eventually a new leader is elected whose name is almost literally Neville Chamberlain who is even more of a peacenick than Mothma, allows the FO to grow relatively unchecked in the name of keeping the peace. Leia through out doesn't like this, is shunned by many of the Senate forms The Resistance (resisting the growing power of the FO) from the folks she trusted most in the RA and basically gets to work tracking them and opposing their bullshit in the outer rim. She secretly is funded by some of the Senate while they publicly deny being associated with her.