me again.

hi everyone, as you all know im helping mum with her diabetes. things are not going well. mums wobbles are getting worse. she can hardly stand now and she is soo dipressed that today she told me she is and has been for some time considering suicide!! i was distraught i dont know what to do anymore. when mum was on diet and metformin she never had these wobbles yes she had highish bg levels 7s and8s but she never felt ill like she does now.
what i would like to ask you all is, if her hbc level were 7.7 then 6 months later 8.9 then 6 months later 9.9 and with no advice on diet was she put on insulin. does it not seem more sensible to address the diet first before putting her on insulin?
can we stop the insulin and see if her wobbles stop?
she has been told there is nothing wrong with the nerves in her head ( she had a mri scan ) and she has had her legs and feet tested and was told she doesnt have diabetes in them.
if we stopped the insulin but kept the metformin what could happen?
please help i dont know what else to do for her!

hi jopar and catherinecherub thanks for relying,
jopar as far as i know her blood pressure is ok she takes 3 bloodpressure tablets a day but i never thought about that before, and she does only have it when she stands up or she notices it more when she stands up.she is not constipated or aneanic but she has been going to the toilet more so i could see if its a urine infection but she has had these wobbles for ages now and instead of getting better they are getting worse, they started as soon as she started on the insulin 2 and half years ago although nowhere near as bad as they are now. thay get even worse if she is stressed or upset. she says she could cope with the diabetes if she could lead a normal life without having to cling on to furniture every time she wants to move. she says she would rather be dead than live like this any longer.she was a very strong woman in her youth and i find it really difficult to see her like this .only 3yrs ago she was really positive.i think the consultant has frightened her to death telling her( diabetes is like cancer its going to kill you in the end! ). she is so obsessed that she does her bloods 5 times per day and more if she feels funny ect.
catherinecherub i dont know if they will help me, the helpline just sends a doc who just doesnt understand. last time mums bg was 11.1 and he said oh yes thats fine!!! what do i do??