Mr Wright, 1200 hours would get you a job as a Second Officer in Qantas. A position that you would fill for perhaps 3-5 years. In that time you would be exposed to many different, very experienced pilots. You would also do many re-newels in the sim as well as revals etc. All of this builds on your "all round" experience so that when you are promoted to the front seat there is a good chance that you will do a competant job.
In respect of this young girl, she is I'm sure a lovely young lady and may even have a natural aptitude for the job. But I'm sorry to say she will probably end up being a burden to the Captain. A Captain has the right to expect that his/her First Officer is up to the job. He/she shouldn't have to carry the load on every leg. I have many friends who have operated with VERY in-experienced F/Os in Europe and more recently in a Regional Airline based in Singapore. Some of the stories are what nightmares are made of!!!