Neptune square Lilith (orb 1.9°) creates concrete friction between the two planets. The orb is very tight; this describes a stable character pattern more than a passing reaction.
Here, Neptune in Virgo in House 4 brings imagination, image, popularity, collective moods, and inspiration into House 4 (roots, privacy, and inner foundation), with Virgo style (precision, method, usefulness, and attention to detail); Lilith in Gemini in House 12 brings pure ideal, absolute demand, fascination, and refusal of compromise into House 12 (retreat, contemplation, long time, and possible confinement), with Gemini style (curiosity, language, movement, and mental adaptation).
Concrete friction: this aspect puts Neptune (imagination, image, popularity, collective moods, and inspiration) and Lilith (pure ideal, absolute demand, fascination, and refusal of compromise) into repeated friction: one can interrupt, inhibit, or provoke the other in concrete situations. Visible angle: Neptune near the IC (orb 4°) touches an angle; this aspect is easier to notice through private base, family roots, and intimate psychological climate. House 4 (roots, privacy, and inner foundation) is in friction with House 12 (retreat, contemplation, long time, and possible confinement); this can create blockage, inhibition, overreaction, or repeated conflict between the two fields.