Sound like she's getting plenty. Children between 1 and 3 years need 350mg of calcium per day which is 300ml (or half a pint or 10 oz), which she is easily getting even if she only takes a couple of oz in the morning. Of course other dairy, cheese etc also counts. At this age (after 2yo) they can also move to semi skimmed milk if you choose, but not 1% or skimmed.
Hoped this helps.
(as an aside, I'd encourage the larger morning milk rather than increase the BT milk, morning fluids help to increase bladder size where as more evening fluids may lead to heavy wetting at night, leaky nappies and less chance of dry nights. Fluids shouldn't be limited in the evening but can be encouraged in the morning, hope that makes sense.)