Do I mention interview turned down to current boss?

BLUF: Do I tell my manager that I recently turned down a request to interview at a job that was for a lot more money than I am on now (50% salary increase)?

I was recently contacted by a recruitment agency whom I have recruited staff through in the past, and they asked to interview at a competitor for a company I used to work for and have 15 years experience. I have since switched industries, though am doing a similar core role now with more responsibility. The job was for a senior management role, where I am currently in a management role. I had an excellent fit to the role and could very well have been offered the job.

 
I decided not to go to the interview because of several reasons:

1) I did some research and the interviewing company has been doing poorly financially for the last 2 years and has lost several major suppliers.

2)  They had a reputation for being unethical when I was at my previous company 3 years ago.
3) I currently have a very considerate boss who appreciates work-life balance and allows me to drop my daughter off at school some mornings and pick her up from after-school club some evenings, leaving at 5pm. I was told there would be no flexible working arrangement in the new role and the hours are 9-6pm with more expected.
4) Lastly and most importantly, I love the company that I work for. They are very generous in their overall package (pension, holiday etc) and they value their employees. I haven’t felt in a long time that I belonged somewhere and that my opinions were appreciated so much!

 
I am due a pay review at my current company at the end of April, where I will be told my pay increase. The average for all staff is likely to be a 2% increase. Staff are awarded more or less depending on their performance review (I did well) and their current salary compared to the market.

 
I am hoping that my Manager remembers that I took a slight pay decrease to start here last January. I have also taken on more responsibility this year and have been told that I will be taking on the additional responsibility of managing another team of 7 people later this year. I do appreciate that often you have to take on the responsibility before you get the pay-rise to accompany it!
 
When I have my pay review discussion, I was considering mentioning to my manager that I had had this opportunity and had turned it down, and to say how happy and committed I am to this company.

I am wary that somehow I may end up conveying the opposite and that she may take it as a threat that I am looking to leave (although I was approached by the agency not the other way around).

Please can you let me know your thoughts on this and whether I should say something or just keep quiet?
Advice on what to say and how to say it would also be appreciated.

Thanks,
Jane