The faith of Sarenrae is generally about hope, so as long as your character is perking people up, its generally considered acceptable.  Mainstream Sarenrites might frown on throwing anything sexual into the mix, but you won't get burnt at a stake for it.  That said, bringing hope for tips/money isn't their general MO, and probably would land you in trouble if a priest or inquisitor found out, since anyone of the faith is expected to do that from the bottom of their heart (only priests of Abadar are within their remit to demand money for their services - in fact, it is a cardinal sin<em>not</em>to demand payment - discovered that in the Crimson Throne AP!)<br/><br/>We could assume that your character has been able to pay for room and board somewhere, but by the time the story starts, her money is finally running out.<br/><br/>From a roleplaying point of view, if Serenity has expressed interest in settling in Sandpoint to administer to the faithful and tend the shrine of the goddess, it is conceivable that she could be in negotiation with Abstalar and the Sandpoint council for a place to stay at the church, making this something of a personal quest for the game.