1. The sickness wasn't with Patchy? 2. They possibly had their eyes open with the shock, but that doesn't usually happen until near the end, I believe. 3. I'm not sure about stress, but most babies are able to take it easy even before birth. 4. Loneliness? That one was with the mother at all times.
1. Lack of nutrients leading to illness, since Patchoulis have the constitution of a strip of wet paper. 2. Shock due to lack of nutrients gradually leading it to starve to death. 3. Stress due to overworking to grow its nutritious, cream-filled body using only secondhand nutrinals. 4. See 1-3.
And yet getting preggers in the first place is a display of constitution what makes the actual Patchouli seem even wussier in comparison.