What it does well
Reads emotional undercurrents accurately and looks after people without being asked.
Water · Cardinal · ruled by Moon
☿ Mercury in Cancer ♋
Mercury governs thinking and speech — how you process and explain. In Cancer, that function takes on protection, memory and deep attachment — a Cardinal Water expression ruled by Moon.
Where it strains
Withdraws instead of stating the problem, and keeps score in silence.
Reading a placement properly
Mercury in Cancer describes a function in a style. It says nothing yet about where that plays out — for that you need the house, and the house needs a birth time. A placement read without its house is half a sentence.