Pay rise agreed but not given

Hi, i need some advise
Ive been working for the same company for nine years and in March i requested a meeting with my manager regarding my pay.
The meeting went really really well and she agreed that it is about time I had a salary increase.
I was really proud of my self and researched how to go about asking and did everything properly, requested a meeting justified myself in the meeting and agreement made that i do deserve a pay increase.
Its now been two months since my meeting and i have still not heard anything further from my manager and when i ask she just keeps saying that she needs to discuss with the MD which is very well and good but she said she is waiting for him to be in a good mood - he is never in a good mood lol
I have been looking for follow up advise templates to send her a thank you for the meeting but can not find anything
anyone been in this situation and what words to use in my letter - i know to start off by saying thank you for the meeting and thank you for agreeing that i deserve a pay increase but what words do i use to say when am i going to get it and how much will i get without being too demanding or pestering her.
any advise please

Dear XXXXX

Thank you for meeting with me back on Tuesday 27th March to discuss my role and development within XXXX Limited, I am greatful for the information given to me during our meeting and also feel very positive that you agreed with my request to receive improved remuneration.

I know from our last conversation that you have discussed my request with higher management and from your feedback the response was a positive one, I know that you are very busy and i do not wish to pester you however i would like to know if any further progress has been made with the request.

I will Look forward to your response.

Kindest regards

XXXXX

please let me know what you think of the note im thinking of sending my manager