I feel your pain. My DD is a non-sleeper (well minimal sleeper), although she does seem to handle not sleeping pretty well most of the time.

When she really needs a sleep, lying down with her and feeding to sleep will sometimes work. Reading a book first can help if she is all worked up. If i feed her on our bed, i can then sneak out and leave her sleeping.

It sucks when others seem to be able to settle bub easier. I think its cos bub feels safe with you and able to express all her feelings. It helps me to think that anyway.

Hope tomorrow is a better day