2LK 5MK is also really good, but you do have to realise when you are not in range for it. Truth is, like a few characters, you have to take a risk for a hitconfirm with Bella unless you are right up close.
Its similar to Eliza where even just committing to 2LK 2MP is unsafe unless spaced very well, actually even then, it is unsafe against many characters particularly with meter.
Ground confirm in general tend to be less safe in SG, a notable exception being Fukua.
So back to the point, 2LK 5MK when close, when far, either 2LK then go in for pressure/tick grab or commit to 2MP and then mix up whether you go for the sweep or not.