First let me assume you mean the bulb lily of the valley, not the shrub that is Pieris but also called lily of the valley. This bulb can be eaten by rabbits and other animals as well as deer and jagged leaves suggest rabbits. I do  think the webbing and small bugs are spider mites. This would cause yellowing leaves but not jagged top growth removed. Spider mites infest dry or sickly plants but a blast of water from the hose every day for at least a week is an easy way to control them by breaking up the webs. The main reason this tough bulb will not bloom is damage to the foliage as the leaves make next year's flower buds. I suggest that after you take care of the mites (you can also spray an insecticidal soap to control mites) you add some Osmocote fertilizer  around the bulbs then cover with a half inch layer of compost or dairy manure mulch. This will slowly feed the remaining foliage to give you a good chance of flowers next year. Keep your eye out for early spring rabbits grazing and I predict you'll have plenty of fragrant blooms next spring. Keep growing, Marianne Binetti