The injections shouldn’t be difficult but it’s what you do if she goes hyperglycaemic- low blood sugar.
Most of the T2 diabetics (humans and also animals) were treated orally, with what they call the OAD (Oral AntiDiabetics) — until the arrival of the glutides ( Ozempic ) – for the time being, reserved to the humans, but, who knows! 
Except very extreme cases - in which insuline is used, OADs were the norm on the medical protocolos for T2 until very recently-- from the old DMSO & Metformin (a molecule that new CT are showing very positive outcomes in other conditions), to the pioglitazones & DPP4s, so, yes, there are alternatives to injections.
Quite, which is one of the advantages of these new medications, that cannot happen. They work by blocking the kidneys from re-absorbing excess glucose, instead excreting it in the urine, rather than causing the body to burn it all up.