If you like her enough to throw more money at me, I'll let you, yes.
(If you're having a tailor alter a piece to fit you, or craft a custom non-designer piece for a special occasion, the tailor will generally charge you the price he or she feels is equivalent to his or her skills and level of expertise, crossed by living costs. Most will accept tips, but few, if any, will expect them; I'd advise you to steer away from anyone who does. It means they either undervalue or overvalue their skills.)
Being as how her name is Silvia, and not Golda, you'd be more likely to get a silver lining than a gold one. ;)