Hi rhial,
The frequent hypo's that your mother is experiencing can be quite easily corrected. One option is to reduce her insulin by 1-2 units and see if this stops her pre-meal hypo. Another is to increase the carbs she eats at each meal, say another 10-20g of carbs, the choice is entirely your mothers. Should her meals be adequate and she wishes to eat no more carbs, cut back the insulin, alternatively if she feels she could accommodate extra carbs then increase her carb intake.
I know that type 2's have problems with getting test strips on prescription, but it may be worth your mum testing say 1 hour before her next meal, then she can correct hypo and then have her insulin prior to eating her next meal as per normal. As always, it is all about testing, both pre/post meal times. As your mum is new to insulin it may take a little time to find the right balance, but if you are in doubt, get in touch with her diabetes clinic.
Hope all goes well
Nigel