Riding share on Haflinger lady

Riding share on Haflinger lady - Hello dear ones, I am looking for my 27 year old Haflinger mare Aleika a riding companion who would still like to pamper her a little! She is still fully rideable and still has good fire under the saddle, so some experience with horses would be required.
Due to your age, it would be good to work with her a little more gently despite her temperament.
I would offer 3 days minimum and who has desire and time also gladly 5 days the week agree.
Daily chores would include box mucking out. How else you would like to spend your time with Aleika, we can discuss if you are interested!
Monthly I would want to take a fee of 80€.
We are located in 29225 Celle and look forward to your message!